St. Chang Industry and Trade to introduce you to the stainless steel security doors must meet the following can be considered on a qualified security doors: 3, in the purchase of a qualified stainless steel security door, steel door vernier caliper thickness businesses available, stainless steel security door frames plate thickness of not less than the minimum required 1.5mm, while the poor are generally stainless steel security door reach such a thickness; stainless steel security door Yong Kang Shengchang selected industry and trade, product qualities, rich, luxurious atmosphere, imported copper plate, abrasion-resistant stainless steel composite The upper door wholesale, corrosion Sheng-chang Industry and Trade to introduce you to the stainless steel security doors must meet the following can be considered a qualified security door: 6, locks checked and qualified stainless steel security door generally used by the public security departments detection of qualified theft exclusive lock stainless steel composite door manufacturers, stainless steel security door locks generally qualified three-position lock, lock not only locks up and down the bar can be inserted locked door to be fixed. Low-grade stainless steel security door with no lock or optional three three-point lock. Locking doors and door frames and points between stainless steel composite door, according to the anti-theft security level A, B, C, D, respectively, shall be not less than 12, 10, 8, 6; low-grade stainless steel security doors, some only four . Stainless steel security door Yong Kang Shengchang election of Industry and Trade of stainless steel composite door customization, product qualities rich, luxurious atmosphere, imported copper plate, abrasion-resistant, corrosion-resistant stainless steel composite door handle _ _ notorious St. Chang Industry and Trade Jiangsu stainless steel composite door Limited by Yongkang St. Chang Industry and Trade. Yongkang St. Chang Ltd. (www.shengchangco.com/about/) Zhejiang Jinhua, household goods inventory leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customers needs. Trade and Industry Leadership at St. Chang staff warmly welcome all inquiries negotiations to create ShengChang better future for industry and trade.