In the face of the different patterns of locks on the market, many consumers are perplexed and do not know how to pick the lock ofthe safe easy to use and solid and durable? Three optional helpyou lock will:See MaterialsThe locks on the market, the basic materials into the stainless steel, copper, zinc alloy, iron and steel and aluminum. The strength of stainless steel, corrosion resistance, the same color,is the best lock-making materials; copper is relatively common,superior mechanical properties, price parity expensive; high-quality zinc alloy is extremely resistant, corrosion resistance isvery strong, easy to shape, generally used to make mid-rangelock. Buy, purchase, renovation Forum, Real Estate Forum & qthe x lSee surface treatmentGeneral surface treatment of plating, painting and coloring three kinds of surface treatment to form a protective layer of the product, since the anti-corrosion and anti-rust, and make the product more attractive and durable. Good quality locks,commonly used electroplated coating moderate, very uniform, bright colors, bubbles, and signs of rust and oxidation. Buy, purchase, renovation Forum, Real Estate Forum (k2 O5 \ 3 Z + m* fWeigh weight than the feeling listening to the soundTo weigh weight, than feel, listening to the sound. Jerry-buildingproducts, to create a hollow materials and poor quality materials,such materials weigh very light use of touch is also very poor, sound stuffy; good locks and vice versa.