The use of some zinc alloy and copper locks, installed on the door for a long time will find a "spot", this phenomenon does not belong to rust, but belongs to oxidation, if this happens, as long as the surface Wax spray can remove the spots.
The installation operation must be correct, especially when the handle and the panel prohibits the use of paper, tape paste. Do not install the lock on the door when the paint is dry, otherwise it will cause surface damage, and the long time will fade.
General recommended the choice of stainless steel lock.
Lock, although it is a kind of small hardware products, but it has a very close relationship with people and society, related to each family, units and public places of security. Lock is a more special commodity, and security has a very important relationship. Therefore, whether domestic or foreign, the lock industry has a very stringent quality standards and security requirements.
