Panic Exit Device, Door Closer, Panic Bar manufacturer / supplier in China, offering Concealed Door Closer for Fire Door Dt-33, Adjustable Aluminum Door Closer (DT-525), Dortec Stainless Steel Panic Exit Device for Fire Door (UL listed) and so on.
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letter of Patent 5
letter of Patent 4
letter of Patent 3 for panic bar
letter of Patent 2 for panic bar
letter of patent1 for panic bar
The chinese government authorize certification for our DORTEC