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About Joinwit

Joinwit Optoelectronic Technical Co., Ltd., as a leading manufacturer, was established in the Min Hang Hi-tech Park of Shanghai in 1998. It specializes in design, R&D, manufacturing and sale of Fiber optic test instruments and passive components. Our Products and Service


1. To provide products designed and manufactured by Joiniwit.

A. Fiber Optic Test Instruments Handheld Optical Power Meter, Light Source, Visual Fault Locator, Multi-meter (Loss tester), OTDR,Fiber Ranger,Optical Fiber Identifier, Optical Talk Set,Optical Attenuator; Bench-top Optical High Stable Laser Source, ASE Laser Source, SLED laser Source, Optical Power Meter, Optical Return Loss/ Insertion Loss Test Station and Bench-top optical Attenuator. At present, Joinwit is the No.1 manufacturer of Handheld Test Instruments (Power Meter and Light Source), exceeding its domestic rivals in terms of sales volume with its high performance cost ratio and considerate services.

B. Fiber Optic Passive Components Joinwit highlight passives includes Fused Couplers,PLC splitters,FTTx WDMs,CWDM,Attenuators, Adapters, Patch Cords etc. Since its establishment in 1998, Joinwit has been starting out to manufacture optical passive components. With years’ experience and hard efforts, Joinwit has set up a dominant position in the industry in China.

C. FBT System (Coupler Work Station) Joinwit is one of the few manufacturers that specialize in Coupler Working Station. The coupler working stations we produce are widely used on many passive components manufacturers of Beijing, Tianjing, Shanghai, England, New Zealand, etc.

D. Tool kits for Optical Cable Construction and Cleaning Joinwit can provide customer not only for its standard configuration tool kits, but also can customize tool kits for customer on the basis of a certain demand of quantity.

2. To provide variety of custom Fiber Optic Products for OEM and ODM services With many years’ manufacturing experience in Fiber Optic Test Instruments and advantages over labour resources, Joinwit is committed to assist customer in providing best fiber optic solutions to meet their specific requirements and to reduce the manufacturing cost. The goal of Joinwit is to provide the reliable and good quality products for its customers.

3. To provide products as requested by other manufacturers in China With many years’ experience in the industry, Joinwit screens out some good business partners which specialize in auxiliary products. In the meantime, in order to serve its customers more conveniently and reduce operational cost of purchasing, Joinwit also provides other related products with reliable quality and reasonable prices. These products include, but not limited to:

A. Network Test Sets and Telecom Line Test Sets xDSL Tester, ADSL tester, Cable Fault Locator, Line Tester, Pipeline Locator

B. Fiber Splicing and Distributing products Fiber Optic Fusion Splicer, Fiber Optic Splice Closure, Fiber Optic Termination Box, Fiber Distribution Frame, Standard Cabinet, etc.

C. Ultraviolet Curing Equipment and Intelligent Fiber Optic Coupler Heating Equipment.

Our certificates 

ISO9001:2000 

EMC 

CMC 

High-tech Enterprise Certificate 

Technical Patents

Joinwit people are taking pride in those honors. Its quality and credit explains why it wins the market.

Our excellent Technical Team 

With more than six years’ experiences of developing and manufacturing in the field of Fiber Optic Test Instruments, Joiwnit has a strong technical team with 9 qualified technical engineers in Optics, Electric Circuit, Software, Machinery, etc.. Additionally, it also keeps good cooperation with the R&D center of the Shanghai Jiaotong University and other leading Research Institutions to satisfy customers’ various requirements.

Joinwit Business Principle 

To provide high performance cost ratio products with considerate services and to deal with all customers in an honest and responsible manner.

You are welcome to contact us for more information of your interested products! Thank you!