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Shenzhen YJ technology Co. is a High-tech company integrated with R&D, manufacture and sale of Lithium-ion battery, whose pack factory stands in Longhua New District Shenzhen, cell site operated in Dongguan city. YJ product lines cover smart phone battery, digital battery, GPS battery, iPad battery, Bluetooth sound box and mobile power.
The firm insists on the development policy of products based on technology and market-oriented. Production equipments and test facilities have been introduced to the factory. The technical engineers have working experience of ATL, B&K and BYD, which ensure the high efficiency ,the advanced technology of YJ battery. With honest, efficient ,pragmatic and creative guideline, YJ is committed to the development of China new energy industry, supply of environmental friendly products with excellent safety performance.
Polymer li-ion batteries are widely applied into many fields: mobile phones, notebook, camcorder, wearable electronics electronic cigarette, bluetooth earphone, wireless communication equipment, portable DVD, electric toothbrush, space flight, aviation, ship communication, petrol oil, gas well, oil pipe-line automatic inspection ocean inspection. earthquake inspection, GPS tracking and  satellite locating system ,remote sensing and telemetry, aeromodelling, lawn mower, electric boat, power tools and other new electronic products.
Prismatic lithium batteries are widely applied into mobile phone, digital cameras, interphones, GPS and so on.
Storage & power batteries application fields of include cover micro­motor car, new models car, electric bike, electric motorcycle, UPS power supply, weeding machine, golf cart and so on.
Pack battery power bank, application fields include mobile phone batteries, digital camera batteries and notebook batteries.

Brief of R&D center
Excellent staff
R&D center has team up many famous professional talents from domestic and foreign lithium-ion battery technological field. Currently YJ Company has owned 26 technical engineers,5 overseas experts,2doctors and 24 core technology development staffs with Master degree.
R&D concept
YJ company R&D center insists on the concept of “life force of technology comes from market” and “creation, refining and quality”;YJ company R&D center believes in the idea of “dream inaugurates future, innovation creates super excellence”,setting technology innovation of new energy to be its own task and providing the whole world with new energy products which are energy-saving, safe and environmentally friendly.
R&D investment
Since its establishment, YJ Company has always been putting much emphasis on the research and development of lithium-ion battery technology, investing  a large amount of funds on liquid lithium-ion battery, soft-packaging lithium-ion battery, polymer lithium-ion battery and battery materials; YJ Company invests more than 5% of sales amount on R&D every year.
R&D technology accomplishments
Company has owned more than 10 patents which mainly involve in anode  material, cathode material, battery structure, battery manufacturing process, battery equipments and other aspects.
R&D equipment
High accuracy charge and discharge tester manufactured by US maccor company, X-RAY tester, DSC/TGA differential thermal analyzer, laser particle size analyzer, specific surface area analyzer, actual density analyzer, BET surface area analyzer, German Unilab Glove box, gas chromatograph, Automatic Titrator, moisture tester, digital display viscosity and so on.
Cooperative partners on technology
Shenzhen Postgraduate college of Tsinghua University, Shenzhen postgraduate college of Northwestern Polytechnic University.