Electronic security doors, door-Sheng Industry (certified), the original level security door by Wanbailin district-Sheng distribution of stainless steel products. Wanbailin district-Sheng Stainless Steel Products Distribution Division (www.sxqsmy.net) is specialized in the "garage doors, Continental doors, fire doors, stainless steel doors, engineering doors, building doors, retractable door" of enterprises, companies adhering to the "integrity management, service intentions, "the idea, to provide you with the highest quality products and services. Welcome to inquire! Contact: Weijing Li. Security doors, depending on its structure can be divided into flat open security doors, security doors and fence-style fence-style folding door three door type. But now as household use in the residential door is mainly flat open security doors wood security door, fence-style security doors mainly with building intercom system products supporting the use of electronic control glass security door, as a community or residential building intercom walkway door. Sliding door is mainly used for small commercial shop. Fire security doors and fire doors into the present, only Shanghai and Chengdu have local standards of fire security doors and other places generally only called into the fire door, which reach the National Fire Protection Class A or B standard fire doors fire security door, (fill in the fire door core or rock wool material) Class A, B standards are generally based on the anti-burn time division; while achieving tamper requirements in the following areas: 1. 2.0mm thick door security doors, steel doors front and back thick are 0.8mm, 2. hardware lock has a tamper function, that both the oblique bolt lock body, but also spit square bolt, but not allowed to install lock world.