ZHENGZHOU KNOWNCHEM IMP. AND EXP. CO., LTD as the subsidiary company of State-owned group belong to attach government enterprise, Founded in 1986 with ISO9001-2008 international quality certification .
Our is a manufacturer and trader specialized research, development production ...
Telephone:86-371-53706735
Address:ROON 1098,NO.101 NANYANG ROAD,ZHENGZHOU,CHINA