Zhongshan Hydi Ainuo Lock Co., Ltd (Zhongshan Hydi Metal Products Co., Ltd) is the professional manufacturer and supplier of security hardware product,capable of satisfying the most demanding of consumer safety, design and convenience. Hydi Ainuo Lock has a leading position in areas such as access control door and windows security products. Since Hydi Ainuo Lock was founded in 1997,we have more than 17 years experience of door lock manufacturing that keep us in leading position of the door lock manufacturing industry.