Shanghai Autotight valve&fitting Co.,Ltd. is an affiliate company of Zhejiang Huaxia valve Co., Ltd. The prime companies are Longwan Yongchang ball valve factory （Established in 1982）and China valve Manufacturing Co., Ltd. （Established in 1996）.  In 2002, Zhejiang Huaxia valve Co., Ltd. was established on the basis of two companies above, whose registered capital is more than 5 million yuan. The area of factory covers more than 20,000 square meters and the new factory is under construction. As a member of Chinese valve association and Wenzhou pump valve association, Zhejiang Huaxia valve Co., Ltd. was approved by ISO9000: 2000 of Norway DNV, CE certification unit and national quality inspection qualified unit. The company has self-export right and the business lines deal with ball valve, stop valve, non-return valve, floodgate valve of ANSI/API, JIS,...