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China National Quality Supervision and Test center for Explosion Protected Electrical Apparatus (CQST)
Address： No. 20 North Zhongjing Road, Nanyang, Henan, P.R.China
Tel：+86 377 63258564 0377-63258639
Fax：+86 377 63208175
E-mail：cqst@cn-ex.com intls@cn-ex.com
Nanyang Explosion Protected Electrical Apparatus Research Institute (CNEx)
Address: No. 20 North Zhongjing Road, Nanyang, Henan, P.R.China
Tel：+86 377 63258558
Fax：+86 377 63225471
Zipcode：473008