📱服务热线：xxx-xxxxxxx
1. The surface of stainless steel handle and other hardware is dim: it can be wiped with brightening agent to add brightness
2. Poor rotation of lock cylinder: when the rotation is not flexible enough, a small amount of black powder can be scraped from the pencil lead and blown into the lock hole gently. Do not drop lubricating oil, it will be easier to adhere to dust
The Division will be committed to continuously improve the production process and quality of products, and constantly develop new products to maintain market competitiveness. Is moving in the direction of a modern enterprise with time.
Address: Digital Manor, No.1 Disheng West Road, Yizhuang Economic Development Zone, Beijing
Telephone：xxx-xxxxxxx