1.Pass the test of industrial standard QB/T 2698 2.Pass the test of industrial standard JG/T268 3.Exit door or fire door must adopt the door closer without the hold function 4.It can be used on both left and right side door 5.Only for single-open,and suit for wooden door, metal door and frame door etc. 6.Standard color is silver gray,other color can be customized |
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