Zhejiang Industry and Trade Fordyce teach you how to choose a good security door to identify: 1: require sellers to produce departments "test of conformity" Door to join, check for compliance with national mandatory standards GB17565-1998 technical requirements. 2: Remove the cat, the doorbell box or lock handle, check the internal structure of the door. Reinforcing steel door should be several root security door, the door front and rear panels are connected together organically. Preferably with asbestos door with fire, thermal insulation, sound insulation material functions as a filler. Current anti-theft doors uneven, some businesses like grocery stores, operating a variety of anti-theft doors, Zhejiang Industry and Trade Fordyce teach consumers how to identify, get a qualified security door class Standard: security door security level can be divided into A Grade A, Class B and Class C, D level, where Class-theft performance of which the highest security doors have to sell, B, C Second, the lowest level D grade. We have seen in the building materials market mostly Class C, D grade security doors, more suitable for general home use. Security door price, Zhejiang, security doors, Fordyce-class quality provided by the Industry and Trade Zhejiang Co. Fordyce. Zhejiang Fordyce Ltd. (www.cngusite.com) strong, credible, Jinhua in Zhejiang security door industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Fordyce and Trade into the brilliant and you work for a better future!