Lifepo4 Battery factory About Us Hong Kong Mayor Changshunke Co., Ltd. was established in 2019, with advanced research and development technology, skilled staff and excellent sales team at home and abroad. In 2020, it was certified by ISO9001 and ISO14001, and in October 2021, it was recognized as a national high-tech. Products have passed CE, FCC, ROHS, UL, CB, Etx and other certifications. We mainly produce high quality, deep cycle lithium lithium battery, such as 18650 battery, 18650 lithium ion battery, 18650 lifepo4 battery, . 聽Lifepo4 Battery factory website:http://www.stag-power.com/lifepo4-battery/