Tag Archives: drive chain

China Mc Nylon Pulley Nylon Elevator Drive Pulley chain pulley

Product Description

Product Description:
Nylon was the first engineering resin and has been employed in apps ranging from electronic, marine, and automotive industries to fibers employed to make carpet. Nylon sheet has exceptional wear resistance and low frictional houses.

Nylon has really great temperature, chemical, and affect properties. Parts machined or fabricated from nylon are light-weight bodyweight and corrosion resistant. Lower friction, very good abrasion resistance and the capability to operate without lubrication, qualify the nylons for these kinds of apps. Elements machined or fabricated from solid nylon are light-weight fat and corrosion resistant. In addition, solid nylon’s excellent load bearing capacity, wear resistance and impact resistance make it perfect for demanding construction environments.

Nylon sheet which has not been compounded with UV stabilizers are sensitive to ultraviolet gentle. These compounds ought to not be utilized for extended outside services. Carbonblack (our black Nylon Sheet) is the most efficient of the UV stabilizers. These additives also improve tensile energy and hardness and reduce ductility and toughness slightly.

Content: PA6,PA66, MC Nylon, PP. PE Abdominal muscles or as your ask for. 

Dimension: as your drawings or samples 

Manufacturing progress: CNC Machinery and Injection Molding. 

Benefits: 

Aging resistant

Low noise,

Anti-tiredness,  

Impact resistant,

Shock resistant,

Corrosion resistant.
 

Specifications

Product identify

nylon rod, PA6 rod, polyamide6 rod

Materials

PA,PP,PE,HDPE,POM

Sort

Plastic Resources

Coloration

all-natural white,blue,black,custom-made shade

Density

one.2g/cmthree

Hardness

eighty five

Working Temp

~120°C

Duration

1000mm

Diameter

20mm-250mm

Surface

smooth

Form

rod

Solution Exhibit:
Item Packaging:
Manufacturing unit And Products:

Certificate Display:
Exhibition Photographs:

Our Services: 
one. Delivering technical session.
two. Samples are cost-free. 
3.We could personalize a variety of items with your brand name logo in accordance to your needs. 
4. Your inquiry will be replied inside 1 hours for the duration of working time,In 24 hours when relaxation time. 
5.Orders will be made just as request and accredited samples.
6. Before shipment,our QC will have inspection to make certain the high quality. 
seven.We constantly attempt greatest to make sure each purchase to supply in time. 
8.Unique packaging according to ask for.

US $5.8-8.5
/ kg
|
1 kg

(Min. Order)

###

Customized: Customized
Color: Black,White or Any Color You Want
Type: Rotating Wheel
Surface Treatment: Zinc Plated
Size: 6inch
Material: Nylon

###

Samples:
US$ 0/Piece
1 Piece(Min.Order)

|
Request Sample

###

Customization:

###

SPECIFICATIONS

Product name

nylon rod, PA6 rod, polyamide6 rod

Material

PA,PP,PE,HDPE,POM

Type

Plastic Materials

Color

natural white,blue,black,customized color

Density

1.2g/cm3

Hardness

85

Working Temp

0~120°C

Length

1000mm

Diameter

20mm-250mm

Surface

smooth

Shape

rod
US $5.8-8.5
/ kg
|
1 kg

(Min. Order)

###

Customized: Customized
Color: Black,White or Any Color You Want
Type: Rotating Wheel
Surface Treatment: Zinc Plated
Size: 6inch
Material: Nylon

###

Samples:
US$ 0/Piece
1 Piece(Min.Order)

|
Request Sample

###

Customization:

###

SPECIFICATIONS

Product name

nylon rod, PA6 rod, polyamide6 rod

Material

PA,PP,PE,HDPE,POM

Type

Plastic Materials

Color

natural white,blue,black,customized color

Density

1.2g/cm3

Hardness

85

Working Temp

0~120°C

Length

1000mm

Diameter

20mm-250mm

Surface

smooth

Shape

rod

What Is a Pulley?

The pulley is a wheel mounted on a shaft or axle. Its purpose is to support the movement of a cable that is taut. This cable transfers power to a shaft. However, there are certain safety precautions that you should follow when using a pulley. Read on to learn more! Listed below are common uses and their main parts. Listed below are some of the benefits of using a pulley.
pulley

Common uses of a pulley

A pulley is a common mechanical device used to increase the force needed to lift a heavy object. Most commonly, these devices are used in construction equipment. These machines use high-tension ropes to transfer heavy objects from one floor to another. Other common uses of a pulley include buckets and flagpoles. These devices are extremely useful in a wide range of applications. To learn more about the common uses of pulleys, keep reading.
A pulley is a wheel with grooves for holding rope. Its purpose is to change the direction and point at which a pulling force acts. It is usually used in sets to reduce the amount of force needed to lift a load, but the work involved is similar. Pulleys are also used in rock climbing devices. For many applications, a pulley is a vital part of construction.
The most common use of a pulley involves hoisting and lowering a flag. Other examples include clotheslines, bird feeders, and escalators. Pulleys are also commonly used on oil derricks. Many other common applications include hoisting and lowering garage doors. Pulley systems are also used in engines and cranes. For more information, check out our interactive pulley diagram!
Pulleys can also be used to lower total work required for a task. In many cases, a pulley will consist of two parts: the pulley hub and the shaft pulley. The hub clamps the shaft pulley, while the pulley itself is connected to the motor or other device. If you’re looking for a pulley, it’s important to learn how it works.
The most common uses for a pulley involve lifting heavy objects, and the mechanism used to lift them is known as a pulley. A pulley is an industrial device that uses two wheels to reduce the force needed to lift a weight. The pulley reduces this force by half by allowing the user to pull on the rope four times as far. The pulley also allows for a smaller lifting distance.

Main parts of a pulley

A pulley consists of the main element of a system. This is typically a cable, rope, belt, or chain. There are two basic types of pulleys – a Driver Pulley and a Follower Pulley. Pulleys are available in small and large sizes. The periphery part of the pulley is called the Face, and the protruding middle part is called the Crown. A pulley’s face can be round, rectangular, or even “V” shaped.
The first pulley was created by the Greek mathematician Archimedes in the third century BCE. These simple machines are made of a rope, an axle, and a wheel. The pulley’s end is attached to a person, object, or motor. These machines can be used in various tasks to lift heavy objects. The pulley is a great mechanical advantage for any lifter.
The ideal mechanical advantage of a pulley is defined by the number of rope segments that pull an object. The higher the number of loops on the rope, the higher the mechanical advantage. The greater the mechanical advantage, the less force is required to move the object. Likewise, the greater the distance the rope traverses, the higher the mechanical advantage of a pulley. There are several different types of pulley, depending on their combination of rope, wheel, and rope.
The basic components of a pulley are the face and hub, and the rope is threaded into the center of the pulley. The pulley is usually made of a rope and can be used to lift heavy weights. It can also be used to apply great force in any direction. Step pulleys have multiple faces, which are fixed in sequence. They can also increase the speed of the driven pulley.
A pulley is a simple machine consisting of a wheel, rope, or chain. These parts are crucial for making moving and lifting easier. Because they change the direction and magnitude of force, they can be a useful tool. Some pulleys even change direction. You can learn more about the pulley by downloading this resource today. The resources are designed to support the new 9-1 GCSEs in Design & Technology and Engineering.
pulley

Mechanical advantage

Pulleys have been used to move heavy objects for centuries. When two rope sections are used, the weight of a 100kg mass can be moved with only 500 newtons of force. Adding an extra pulley increases the mechanical advantage. If the pulley has two wheels, the distance between the rope sections and the wheel grooves is only half the distance, but the mechanical advantage still applies. Adding another pulley increases the mechanical advantage, but can be risky.
Mechanical advantage is the ratio of force used versus force applied. The calculations are made under the assumption that the ropes and weights do not elongate or lose energy due to friction. If the weights are very light, the mechanical advantage is greater than that in the real world. To calculate the mechanical advantage, the weight of the load to be lifted must be the same as the weight of the person using the pulley.
A single moveable pulley has a mechanical advantage of two. The weight passes around the pulley, and one end of the rope is attached to a fixed point. The pulling force is then applied to the other end of the rope. The distance the weight travels doubles, or halved, depending on the direction of the pulley. Adding a second pulley reduces the distance and the effort required to lift it.
There are several ways to calculate the mechanical advantage of a pulley system. Some methods are specific to certain types of systems, while others work for all systems. The T-Method is a good choice in many applications, as it calculates the units of tension for each rope segment. Once you have determined the input force, you need to determine the maximum force that will be applied to each component. A compound pulley, for example, will require 4 units of tension for each rope segment.
In simple terms, the effort is the amount of force needed to lift the load. This force is measured in newtons (N). A mechanical advantage is often presented without units. If the student does not have this unit, you may need to convert the units to newtons, since one kilogram is equal to 10 newtons. If you can’t figure out the units of effort, you can use the KWL chart provided by the teacher.
pulley

Safety precautions

There are a few safety precautions you should take when using a pulley. First, always check the SWL (safe working load) before attaching anything to the pulley. This indicates the maximum weight and angle the pulley can safely handle. Second, make sure that your work area is free from people and debris. Third, wear a hard hat to protect your head from blows and falling objects.
Another important consideration is anchoring. Although the pulley reduces the weight of an object, it is not enough to eliminate the weight. This is especially true if you are hoisting a heavy object, such as a motorcycle or lawnmower. It is important to ensure that the anchoring point can support the entire weight of the load. It is also important to follow proper anchoring procedures when using a pulley to lift a motorcycle or lawnmower.
In addition to the safety latch, you should use a tag line to control the suspended load. Remember that a chain pulley block is necessary for vertical lifting. You should also wear personal protective equipment (PPE) while using a pulley to avoid injuries. If your workplace does not have an PPE policy, you should consider implementing a similar policy. These safety guidelines are a good start.
If you are using a pulley to lift heavy objects, make sure to wear gloves. Those who are not familiar with rope-pulling will have an easier time demonstrating how it works. If you are using a rope-pulley system in a classroom, be sure to follow lab safety guidelines. Wear cloth gloves, clear the area, and do not jerk the rope. In addition, never allow yourself to be pulled into the rope by an unfamiliar person.
Another important safety precaution when using a pulley is to ensure that the anchor point for your system is adequate to support the weight of the object being lifted. Check with the manufacturer of the pulley to find out what its weight limit is, as some types of pulleys are designed to lift much heavier weights than others. It is important to follow all manufacturer’s instructions when using a pulley.

China Mc Nylon Pulley Nylon Elevator Drive Pulley     chain pulleyChina Mc Nylon Pulley Nylon Elevator Drive Pulley     chain pulley
editor by czh 2023-01-15

China Roller chain and sprocket manufacturer Tunnel torque transmission in chain drive in Geneva Switzerland Packaging Wrap Tubing PVC Polyolefin Film Packing Heat Tube Cutting Shrink Wrapping Machine with ce certificate top quality low price

China Roller chain and sprocket manufacturer Tunnel torque transmission in chain drive  in Geneva Switzerland  Packaging Wrap Tubing PVC Polyolefin Film Packing Heat Tube Cutting Shrink Wrapping Machine with ce certificate top quality low price

We – EPG Team the largest Chain and agricultural gearbox factory in China with 5 various branches.

We inspect every single piece of bearing by ourselves ahead of shipping and delivery.EPG we supply chromed bar and tubes for hydualic and pheumatic cylinders, pto shaft, agricultural gearboxes and so forth. roller chain meets or exceeds ANSI standards and is manufactured in ISO accredited factories. As is the circumstance with our pillow block bearings and ball bearings, our roller chain elements are examined prior to cargo to insure top quality. The roller chain areas and roller chains we provide are pre-stretched to insure you have minimal sag. It also arrives with reliable rollers, making certain that it is of the maximum quality. We appear ahead to the possibility to serve you and hope to insert you to our expanding household of happy clients. Description:
Beautiful device, Stable top quality, Security,vitality conserving, patented products, domestic initiative, application to the POF PVC PP movie  thermal shrink packaging influence is excellent.
Attributes:
1.Physical appearance and knot design in accordance with countrywide stHangZhourds, the fuselage employs fingerprint resistant sheet creation following spray treatment.
2.Handle panel making use of programming system, 12V DC input , button swap , digital show. 
3.  Transmission utilizing 24v DC Motor velocity management utilizing variable frequency technological innovation -9 file adjustment.
4.The conveyor belt can be employed wire mesh belt, chain roller, Teflon mesh belt three. 
five.Heating making use of 600W 220V much infrared quartz heating tube. 
6.Temperature manage making use of substantial precision intelligent temperature management system . up and down temperature independent regulation. 
seven.Very hot air circulation making use of 220V 60W 2200 to the extended axis motor with wind wheel. 
8.The bracket can be disassembled , and the peak of the bracket can be modified. 

L SEALER FQL 450 A SHRINK TUNNEL BSN 4571C
VOLTAGE 220/50-60HZ VOLTAGE 380v fifty-60HZ
Electrical power 1.35KW Electrical power 9KW
AIR Strain: 5-7 TUNNEL Measurement(L*W*H) 1200*400x200mm
Capability 15-30bags/min Item Dimensions(W*H) 350x150mm
Solution MAX SIZE  L+H(H<150mm) <500mm EPT Velocity -15m/min
Item MAX Dimensions W+H(H<150mm) < 400mm Content CHAIN, TEFLON
SEALING Measurement 550*450mm CONVEYING LOAD 20kg max
Equipment Dimension (L*W*H) 1650*800*1450mm Equipment Measurement (L*W*H) 1600x560x660mm
Bodyweight 300KG Bodyweight 80kg 
Application: POF.PE, Software: PE.POF

 

The use of unique products manufacturer’s (OEM) portion quantities or logos , e.g. CASE® and John Deere® are for reference functions only and for indicating item use and compatibility. Our business and the detailed replacement elements contained herein are not sponsored, accredited, or manufactured by the OEM.

China Roller chain and sprocket manufacturer Tunnel torque transmission in chain drive  in Geneva Switzerland  Packaging Wrap Tubing PVC Polyolefin Film Packing Heat Tube Cutting Shrink Wrapping Machine with ce certificate top quality low price

China Roller chain and sprocket manufacturer Tunnel torque transmission in chain drive  in Geneva Switzerland  Packaging Wrap Tubing PVC Polyolefin Film Packing Heat Tube Cutting Shrink Wrapping Machine with ce certificate top quality low price

China Roller chain and sprocket manufacturer Tunnel torque transmission in chain drive  in Geneva Switzerland  Packaging Wrap Tubing PVC Polyolefin Film Packing Heat Tube Cutting Shrink Wrapping Machine with ce certificate top quality low price

China Roller chain and sprocket manufacturer Tunnel torque transmission in chain drive  in Geneva Switzerland  Packaging Wrap Tubing PVC Polyolefin Film Packing Heat Tube Cutting Shrink Wrapping Machine with ce certificate top quality low price

Best made in China – replacement parts – pintle Chain & sprocket manufacturer : Stainless chain drive and belt drive difference China in Leipzig Germany Steel Snap Hook From Chinese Supplier with Quality Certification with ce certificate top quality low price

Best  made in China - replacement parts - pintle Chain & sprocket manufacturer : Stainless chain drive and belt drive difference China in Leipzig Germany  Steel Snap Hook From Chinese Supplier with Quality Certification with ce certificate top quality low price

We – EPG Team the greatest Chain and agricultural gearbox manufacturing facility in China with 5 diverse branches. For much more information: Cell/whatsapp/telegram/Kakao us at: 0086-13083988828

EPG is a professional producer and exporter that is involved with the design and style, improvement and production.Competence EPG is 1 of the greatest companies in China. We have superior equipment for production and new technological innovation screening capacity . By way of adopting new technologies from British, German, U.S.A, our merchandise are best sellers all above European, The united states, and Southeast Asia.for industrial chains and sprockets It is our day-to-day problem to offer our consumers with the optimal merchandise – that indicates optimum for the required software and for the customers’ particular specifications. In some cases it indicates that we truly create and manufacture really unique chain sorts for 1 certain customer. In get to be capable to do so, a few items are crucial: A single aspect of our application consulting is that we have been gathering and combining the expertise in chain and sprocket purposes in numerous areas for a long time. This is particularly exciting for us whenever customers strategy us with some exceeding and difficult specifications.

Stainless Steel Snap Hook From Chinese Supplier with Good quality Certification

Also acknowledged as a Carabiner or Karabiner,these stainless metal carbine hooks have a ‘gate’
which is held shut by being pushed once again EPT the grove in the hook’s body.Straightforward and effective,
they are excellent for use within the design and leisure industries and EPT professional operate
when remaining secure is top precedence.

Made utilizing leading high quality stainless metal,they’re fantastic for using internally and externally.
Weather conditions-proof and not prone to rusting,they’re versatile enough to be utilised in sports activities these kinds of as
base jumping,bungee leaping,parascending, sailing and several EPT athletics.They’re perfect for
use with fibre ropes as effectively.

Company Information:

HangZhou EPT is a professional maker which generates the adhering to products:
shackles, wire ropes,wire rope clips,turnbuckles,thimbles,swivel,snap hook, hooks,
load binders,chains,glass clamp, and many others.

We have been in this line for 15 several years. We sincerely hope to set up prolonged and stable
business cooperations with your organization.

We validate you very good high quality, be EPT price tag, be EPT support and punctual shipping time.

If you have any inquirys in our line, remember to truly feel free to get in touch with us.
We will try all our be EPT to assistance you.

FAQ
1. Can I be your agent?
Of course, welcome to deep cooperation. We have large advertising of EPT model in the market now. For the detai EPT remember to speak to with our overseas manager.

2. Is OEM offered?
Yes, OEM is obtainable. We have specialist designer to aid your manufacturer promotion.

3. How can I get a sample to check your quality?
After price confirmation, you can require for samples to check our quality. Free for the samples, but you have to pay for the freight.

4. Are the goods analyzed just before delivery?
Yes, all of our items had been certified prior to delivery. We te EPT every single batch every working day.

5. What is your top quality promise?
We have various varieties of products which can meet diverse high quality stHangZhourd.
EPT QC section will teset merchandise before shipping. We have one hundred% good quality guarantee to clients. We will be responsible for any good quality issue.

six. How about the delivery time?
The delivery time is depend on the products and the quantity. But generally, the delivery time for a container is about one month. 

seven. What is actually reward will you provide?
Your client content on the high quality.
Your client ongoing orders.
You can get great reputation from your market and obtain far more orders.

 

The use of original gear manufacturer’s (OEM) part numbers or logos , e.g. CASE® and John Deere® are for reference reasons only and for indicating item use and compatibility. Our firm and the shown substitution elements contained herein are not sponsored, accepted, or produced by the OEM.

Best  made in China - replacement parts - pintle Chain & sprocket manufacturer : Stainless chain drive and belt drive difference China in Leipzig Germany  Steel Snap Hook From Chinese Supplier with Quality Certification with ce certificate top quality low price

Best  made in China - replacement parts - pintle Chain & sprocket manufacturer : Stainless chain drive and belt drive difference China in Leipzig Germany  Steel Snap Hook From Chinese Supplier with Quality Certification with ce certificate top quality low price

Best  made in China - replacement parts - pintle Chain & sprocket manufacturer : Stainless chain drive and belt drive difference China in Leipzig Germany  Steel Snap Hook From Chinese Supplier with Quality Certification with ce certificate top quality low price

Best  made in China - replacement parts - pintle Chain & sprocket manufacturer : Stainless chain drive and belt drive difference China in Leipzig Germany  Steel Snap Hook From Chinese Supplier with Quality Certification with ce certificate top quality low price

Best made in China – replacement parts – pintle Chain & sprocket manufacturer : W9516-52540 chainsaw chain drive link chart China in Zaria Nigeria Kubota Rotary Cultivator Krx164 165 Wheel Chain with ce certificate top quality low price

Best  made in China - replacement parts - pintle Chain & sprocket manufacturer : W9516-52540 chainsaw chain drive link chart China in Zaria Nigeria  Kubota Rotary Cultivator Krx164 165 Wheel Chain with ce certificate top quality low price

We – EPG Group the most significant Chain and agricultural gearbox manufacturing facility in China with 5 different branches. For more particulars: Cellular/whatsapp/telegram/Kakao us at: 0086-13083988828

we supply chromed bar and tubes for hydualic and pheumatic cylinders, pto shaft, agricultural gearboxes and so forth. industrial Our principal products are chain , gears, sprocket, Needle Roller bearings, Cylindrical Roller Bearings, Rod end Bearings, Spherical basic bearings, Monitor roller Bearings for Guideway, Roller Bearings, Merge Bearings for forklifts, Water Pump Bearings, SNR Auto Bearings and all types of Spherical Bearings. factors like roller chains. Roller chains are available in normal, nickel plated & stainless steel resources in pitch dia. ranging from 1/4 in. to 3 in. Kinds incorporate leaf chains in lacing configurations ranging from 2 x 2 to 8 x 8. Leaf chains are accessible in pitch dimensions ranging from 1/2 in. to 2 in., pin dia. ranging from .156 in. to .687 in. & tensile strengths ranging from 4,000 lbs. to 156,000 lbs. Apps consist of agricultural, conveyors, drilling, electronics assembly, foodstuff processing, fork lift trucks, hoists, packaging & textile machinery. engineering course chains & precision roller chains. One strand chain, multi-strand chains, double pitch chains, corrosion resistant chains, self-lubricating chains, attachment chains, leaf chains, and specialty chains. Company Information
HangZhou EPT EPT Areas Co., Ltd.
HangZhou EPT EPT Elements Co .,Ltd,Mainly products of Lier-like G series ,D series ,K series ,C Series,excavator and entrance loader sequence fork,grass fork,grass machine,and digging machine,clean Machine,snow equipment and EPT goods in the industry, hundred of different items of loader,the capacity of generation about ten.000 sets /calendar year with ISO 9001:2000 global quality,our firm adhere “solidarity, progress ,sensible and modern” spirit, attempt for each and every merchandise into a boutique ,place developing small loader is our course .Our objective is that to produce LIER Weighty Sector is the fir EPT brand of loader.
EPT products ,very good soon after-revenue support ,aggressive cost all rewards to win wide marketplace for organization.We have exported to Russia, Brazil, Argentina, Australia, Iran, iraq, Singapore, EPT Zealand ,and a lot of EPT international locations.
Our firm from “manufacture “transfer to “manufacture with provider, pay out more interest to scientific and Technological innovation administration innovation and growth of operators ,to build LIER Heavy Market is a main aggressive in design machiner.

FAO

Q1. What is your phrases of packing?
A: Normally, we pack our products in our W brand name box ..

Q2. What is your terms of payment?
A: T/T 30% as deposit, and 70% ahead of delivery. We are going to display you the pictures of the merchandise and offers  before you pay the equilibrium.

Q3. What is your phrases of shipping and delivery?
A: EXW, FOB, CFR, CIF.

This fall. How about your delivery time?
A: Generally, mo EPT of objects we hold stock for all time . it will get 7to 10 days soon after acquiring your progress payment.  .if we didn’t have inventory ,The supply time relies upon on the items and the quantity of your order. Normaly thirty to 60days .

Q5.  What is your sample policy?
A: We can offer the sample if we have completely ready parts in stock, but the consumers have to spend the sample co EPT and  the courier expense.

Q7. Do you examine all your products just before delivery?
A: Yes, we have 100% te EPT prior to delivery

Q8: How do you make our company prolonged-expression and very good relationship?

1.Satisfy tiny amount orders and seasonal orders by our ample safety inventory

two.Assure be EPT good quality with our total inspection program just before cargo

3.Ensure timely shipping to customer’s specified internet site by our skilled management of warehouse and van fleet

4.Offer in time Feedback monitoring and following-income companies to improve the customer’s satisfactory.

The use of first gear manufacturer’s (OEM) part numbers or trademarks , e.g. CASE® and John Deere® are for reference purposes only and for indicating solution use and compatibility. Our organization and the outlined alternative components contained herein are not sponsored, authorized, or manufactured by the OEM.

Best  made in China - replacement parts - pintle Chain & sprocket manufacturer : W9516-52540 chainsaw chain drive link chart China in Zaria Nigeria  Kubota Rotary Cultivator Krx164 165 Wheel Chain with ce certificate top quality low price

Best  made in China - replacement parts - pintle Chain & sprocket manufacturer : W9516-52540 chainsaw chain drive link chart China in Zaria Nigeria  Kubota Rotary Cultivator Krx164 165 Wheel Chain with ce certificate top quality low price

Best  made in China - replacement parts - pintle Chain & sprocket manufacturer : W9516-52540 chainsaw chain drive link chart China in Zaria Nigeria  Kubota Rotary Cultivator Krx164 165 Wheel Chain with ce certificate top quality low price

Best  made in China - replacement parts - pintle Chain & sprocket manufacturer : W9516-52540 chainsaw chain drive link chart China in Zaria Nigeria  Kubota Rotary Cultivator Krx164 165 Wheel Chain with ce certificate top quality low price