Xinxiang Kolanky Technical Co., Ltd is a group enterprise integrated in scientific research, manufacturing and trading. We dominated oilfield chemicals. Administered companies including Henan Xinxiang No.7 Chemical Co., Ltd, Xinxiang Xingguang Chemical Co., Ltd, Xinxiang Xinli Chemical Co., Ltd, Hebei Yingyu Mining Co., Ltd. We work with more than 20 provinces, municipalities and hundreds of Chinese quality suppliers to establish a close working relationship, with plenty of supply and ...