Zhejiang Hongda Special Rubber Products Co., Ltd. was established in 1993, located in the beautiful city - Zhoushan, is a professional manufacturer specializing in producing safety valve, safety cap, safety head, terminal seal ring, O-ring, acid injection, polymer microporous plastics, battery case, etc. for using in lead-acid battery, lithium battery, and supercapacitor. After development, innovation, and reformation, the company has already become a famous high-tech enterprise.

Our company integrate development, production, and sales, focus on technical innovation, and constantly introduce professional talents to research and develop high quality, high performance battery safety valves. Now, we have a number of patent products, including battery safety valves, safety caps, microporous materials, safety heads, etc., which have been exported to overseas markets. Meanwhile, our company have achieved many honors, like high-tech enterprise in Zhejiang, high quality and integrity model unit, and quality supplier, depend on superior product quality and good reputation. The company emphasis on modernized enterprise culture, adhere to the philosophy “customer first, quality first”, follow the quality principle “base on quality, create excellence”, implement the spirit “development is the key, creation is the soul, market is the premise, service is the source”, and insist the business practice “people oriented, growing together, fair shares”.  Rely on these beliefs, the company is gradually realizing the goal “creating the national and international top valve supplier”. Depending on technical innovation, Hongda will speed up development, and thus create a new future.