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D70 concealed cam action door closer installation
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We have perfect quality control system, from the quality control of the material supplier to the quality control of the finished product. We also own UL officially authorized laboratories, product testing results recognized by UL.
High-precision equipment. Ultrasonic cleaning, impregnation, etc., are our characteristics. We have sufficient production capacity and planning system. Annual output is about 2.0mils pcs. Monthly production capacity is 150,000 to 180,000.
Our company has excellent management team and development team, with multiple patents, and CE, UL and ANSI certifications. Our products have max. Life cycle test of 5 million cycles. We have passed European and China ISO90001:2008 QMS Certification. The factory pass rate is high.
Zhejiang Dorrenhaus Hardware Industrial Co., Ltd.
Tel: +86-577-68723168
Mob: +8613616776711
Whatsapp: +8613616776711
Add: #350 Guilan Road, Qiaodun, Cangnan, Zhejiang Province, China
We have perfect quality control system, from the quality control of the material supplier to the quality control of the finished product. We also own UL officially authorized laboratories, product testing results recognized by UL.
High-precision equipment. Ultrasonic cleaning, impregnation, etc., are our characteristics. We have sufficient production capacity and planning system. Annual output is about 2.0mils pcs. Monthly production capacity is 150,000 to 180,000.
Our company has excellent management team and development team, with multiple patents, and CE, UL and ANSI certifications. Our products have max. Life cycle test of 5 million cycles. We have passed European and China ISO90001:2008 QMS Certification. The factory pass rate is high.
Zhejiang Dorrenhaus Hardware Industrial Co., Ltd.
Tel: +86-577-68723168
Mob: +8613616776711
Whatsapp: +8613616776711
Add: #350 Guilan Road, Qiaodun, Cangnan, Zhejiang Province, China
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