We,NANJING ZKL CORP LTD, established in March 1998, we have studied and manufactured kinds of seriers products for oil and gas fields including Demulsifier series, Water clarifier series,Corrosion inhibitor series,Scale inhibitor series and other chemicals for oil and gas fields.We also manufactur assorted sorts of chemicals agent as customers' requirements for different oil(water) quality and accordingly products. Above products have used in the China National Offshore Oil Corporation (CNOOC) and the China Petrochemical Corporation (Sinopec), PetroChina Company Limited (PetroChina) (CNPC) and others many years.If any interested,we can supply more details.