St. Chang Industry and Trade remind you in the purchase of the security door when the following points: (1) Consumers should be based on the size of the bedroom doorway, opening direction, color patterns, such as the actual requirements to select the appropriate security doors. (2) anti-theft security door damage function is the most important function of the time of purchase may be required to produce relevant vendor compliance certification testing, product quality should meet the technical requirements of national standards. Yongkang St. Chang Industry and Trade Co., Ltd. Security Door exquisite craft, reliable quality stainless steel security door handles, stainless steel security door price, welcome customers and friends to buy. St. Chang Industry and Trade remind you in the purchase of the security door when the following points: (4) Check Process Quality: Special attention should check for welding defects, such as the open welding, not welding, weld and so on. To see if the doors and door frames with dense high-grade stainless steel security door, space is uniform, whether open and flexible, all joints are dense, the surface should be treated with preservatives door stainless steel security door handle, generally should be painting and spray, paint surface There should be no bubbles, color uniformity, most doors in the door frame is also embedded with a rubber seal, will not issue harsh sound of metal crash when closing the door. Yongkang St. Chang professional design and production industry and trade security door products, using high-quality materials Luoyang copper surface after the high-tech chemical treatment. Stainless steel security doors custom, Fujian stainless steel security doors, Trade and Industry in good faith by the Holy Chang Sheng-chang work Yongkang Trade Limited. Yongkang St. Chang Ltd. (www.shengchangco.com/about/) strong, credible, Jinhua in Zhejiang housewares industry has accumulated a large inventory of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the St. Chang Industry and Trade into the brilliant and you work for a better future!