How to Installation? 1. Insert the lock into the lock hole on the inner panel and insert the locking screw into the hole in the lock panel. Align the locking screw hole and tighten. 2. Insert the square chute in the same direction as the handle fixing screw into the square hole of the lock body. 3. Mount the external handle. 4. After tightening the fastening screws on the inner panel, tighten the fastening screws on the handle. 5. Install the lock box and lock plate, tighten the screws.   Brief Introduction Wenzhou Jifu Hardware Co., Ltd. was founded in 1999, formerly known as Wenzhou Xiangyang decoration factory(founded in 1985), through social change and corporate restructuring, Jifu’s hard-working and innovative quality is unchanged. At present, the company has a production area of 13000 square meters, with a total number of 120 people, divided into the finance department, personnel department, production department, purchasing department, sales department, product development department and other departments. Main products: door viewer, door handle, door knocker, furniture handle, door stop and all kinds of door hardware accessories.