How to Installation? 1. Insert the lock body into the lock hole on the door side, and tighten the two self-tapping screws. 2. Screw the two fixing screws and fixing bolts on the outer plate. 3. Align the two bolts on the outer panel assembly with the pre-drilled holes on the door panel and install the outer panel assembly. 4. Install the inner panel components, gently tighten the two fastening screws, pay attention to adjust the position so that the handle hole, keyhole, square keyhole and keyhole on the panel are coaxial.   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. Production workshop covers die-casting, polishing, automatic, instrument, optical, injection molding, assembly and so on, each link of the independent production has a good quality and quantity, to provide customers with the best services and products.