Look at the material, lock material on the market are basically divided into stainless steel, copper, zinc alloy.
First, we must first understand whether the product name, site, trademark and whether there is a professional quality inspection agencies recently issued a test report.
People buy locks, the general are worried about the lock is not durable or not long before the surface will rust or oxidation.
The newly renovated house interior contains a large number of corrosive gases. In particular, the paint on the wooden doors will emit formaldehyde and other corrosive gases
Lock refers to the closure of the role of the device, which includes locks, keys and accessories, generally interpreted as "must be unlocked with a key to seal the device."