ZNW Technology Co., Ltd, founded in Jan. 2020 , factory as Shenzhen Hongshanjie Technology Co., Ltd, which located in Shenzhen with specialization in consumer electronics as charging solution, audio, home appliance and health products. With more than 10 years of experience on battery related products , we have professionla pre/after-sales service and technical support .We keep improving our management level continuously, and obtained ISO9001 certificate, also audited by BSCI. All our products are approved by UL, CE, FCC, and etc. Any OEM or ODM requirements, welcome to contact us !