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Life Testing of Closer
Life test of door closer
Life test of door closer 2
Spring dynamometer
A corner of the metering room
Salt spray tester
Performance test of door closer
Spring Pressure Test
High and Low Temperature Test Box
Optical hardness tester 1
Microhardness tester
Image measuring instrument
Zhejiang Dorrenhaus Hardware Industry Co., Ltd.
Contact Us
+86 13616776711
0577-6872-3168
Email Us
sales@dorrenhaus.com
Visit Us
No. 350, Guilan Road, Qiaodun Town, Cangnan County 325800 Wenzhou China
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