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As a professional door closer manufacturer in China, we provide customers various exterior and interior door closer, like concealed door closer, heavy duty door closer, etc. Our door closers are high-quality, durable, anti-rust and textured. The door closers we provide are suitable for wooden door, metal door, fire rated door, double door, single door, steel door of commercial or residential application.

It is desirable that the doors at final exits in public buildings, places of entertainment, shops etc should be fitted with panic devices operated by a horizontal bar or touch bar. The emphasis for products covered by this standard is on safe exit rather than security.

American National Standard Institute (ANSI) ANSI 156.1 This Standard establishes requirements for butts and hinges. Cycle tests, lateral and vertical wear tests, friction tests, strength tests, finish tests, and material and dimensional requirements are included.

Guidelines for frequency of door usage and standard for lock Build type Daily usage Yearly usageStandard for lock High frequency & Heavy weight door Large department store entrance 5,000 1,825,000 ANSI standard Lock Hospital corridor and surgical

American National Standard Institute(ANSI).European(EN).Australian Standard(AS).CNACL China Local Fire Test Beauer Certificate CANCL to be satisfied

D&D Hardware Mortise Locks are meet EN12209,according to DIN 18250, 18251, suitable for commercial, industrial and prestigious residential projects and provide different functions to meet various applications.

In today's international business, more and more customers prefer to do business directly with factories, because factories always give better price and professionalism,So more and more trading companies pretend to be a factory.