yongkang gold helmet co, ltd. is a branch of kandi group. founded in 2005, it is the one modemized and comprehensive enterprise that integrating research and development, production and trade of steel security doors series non-standard door series, steel interior door series and locks . the company is located on the center of china hardware city yongkang , zhejiang, covers an area of 60000 square meters has been formed , 800 employees, 60 researchers, with three inernational advanced level of production lines, become a production base produce 600000 sets of security doors and steel interior door, 100000 sets of nonstandard of door yearly.