1.Passed the test of industrial standard QB/T 2697
2.Passed the test of SGS & DGM
3.Passed the test of EN1154 standard of door closing detection
4、Originate the special filler with anti-rust, water proof, keep warm, insect prevention
5.It can be used on both left and right side door
6.Bidirection opening and the single side opening should be achieved by auxiliary method
7.Suit for wooden door, metal door, glass door, frame door
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