Set up in 1989, Shengping Safety Protection Locks Manufactur is an door chain lock manufacturer and door chain locks supplier specialized in the manufacture of different kinds of locks. We have obtaiined quality system authentications as ISO9001-2000 International Quality Control System Attestation. According to many years of producing and R&D experience, we produce locks more than 100 kinds of specification with different kinds of raw materials & styles. Moreover, we can do customized work as per clients designs.