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QINGDAO ZHL LOCK GROUP was founded in August 2003, with Zhongshan Ainuo Lock Co.,Ltd, Qingdao Arrow Lock Group Co., Ltd, Qingdao Zhongling Electronic Technology Co., Ltd, Changzhou Zhongling Door Handle Co., Ltd etc 8 companies. Exports more than 120 countries and regions, with annual sales $ 75 million. The  company mainly produces induction card electronic door locks, fingerprint electronic door locks, electronic door locks and a vaviety of cylinders, lock, door handles, knob locks, drawer, padlocks. The company has passed ISO9001 international quality system certification and ISO 14001 international environmental protection system certification, the quality of mainstream products with CE safety certification and the British 1303 quality certification.