China suppliers rechargeable universal slim oem power banks wholesale

Shenzhen OKZU Technology Co Ltd 1. Professional manufactory of power bank and solar chargers 2. 10 years service experience in oversea market & custome's service 3. Professional OEM and ODM service 4. High quality assurance. Full set approval CE,FCC,ROHS,etc 5. Only use class A battery with high quality 6. R & D ability of 20 items new product a year ||Less|||||| |