Shandong Yanggu jiangbei Chemical Co.,Ltd.----the nominated supplier of SINOPEC & CNPC.We have always been focusing on producing and reaching of oilfeild chemicals ,anual output can up to 20000 tons. Is a specialized company engaged in the oilfield chemical additives. The product quality are reaching or higher than the international advanced level and bulit good relationship with Sinopec Northwest Oilfield Branch, Sinopec Southwest Oilfield Branch ,Zhongyuan Oilfeild, Bohai sea drilling.