Zhejiang Hongda Special Rubber Products Co., Ltd. was established in 1993, is a professional manufacturer specializing in producing safety valve, safety cap, safety head, terminal seal ring, O-ring, acid injection, polymer microporous plastic products, battery case, etc. for using in lead-acid battery, lithium battery, and supercapacitor. After 20 years’ development, innovation, and reformation, the company has passed the ISO9001:2000 international quality system authentication, and become a high-tech enterprise...

Our products have already been widely used by GS, HBL, Nandu Joint Group, China Shoto, Chilwee Group, Leoch Battery, CALB, Fengfan Stock Co., Ltd. and so on.

Technical Center

Our company integrate development, production, and sales, focus on innovation, and constantly introduce professional talents.
Striving to research and develop high-tech, high-quality, high performance storage battery safety valves.