Some dealers are known in the bronze products, raw materials used for the bronze 1 grade sheet, and in fact, the two to define the standard plate and price differences of formaldehyde release. If consumers do not understand, it may allow unscrupulous businessmen to fish in troubled waters. When signing a contract for door purchase, consumers should pay attention to the detailed information of the board grades, hardware models, mesa materials and so on.
To this end, the factory gate to remind consumers in the purchase of the door manufacturers should pay attention to understanding the situation of production and operation, whether your own professional installation team, is a special service department; to verify the qualifications of the businesses, such as foreign brands, ask them to show by Guan Zhengming. In addition, we should also pay attention to the inspection report of material, such as plate, material and so on, so as to avoid the inferior products.
