Door coordinators are used to control the closing sequence of a pair of doors when both leaves are furnished with latching hardware and one leaf latches into the other. Typically, the doors will have a vertical rod exit device or automatic flush bolts installed on the inactive one, preassembled lock

Stainless steel is short for stainless acid-resistant steel. Weak corrosive media such as air, steam, water or the steel with rust resistance is called stainless steel.Each stainless steel has good properties in its specific application fields. The key to success is first to clarify the usage, and t

Selection of Stainless Steel Suitable for EnvironmentStainless steel is short for stainless acid-resistant steel. Weak corrosive media such as air, steam, water or the steel with rust resistance is called stainless steel.Each stainless steel has good properties in its specific application fields. Th