Weifang Tenor Chemical Co.,Ltd. is located in Ocean Chemical Development zone, Weifang, Shandong, a joint-stock enterprise with production, export and services of chemicals, has widely adopted world-advanced equipments and management system, and our products quality is assured under the ISO9001 and ISO14001 standards, mainly specializes in developing Oil Drilling chemicals series, Water treatment chemicals series, Food additives, Oceanic chemical series, etc. Our main products include: a. Oil drilling chemicals series : (Caclium Chloride, Magnesium Chloride, Calcium Bromide, Sodium Bromide, Sodium Formate, Potassium Formate, CMC,etc.), b. Water treatment series : (Polyaluminium Chloride, CaCl2, MgCl2, Cyanuric Acid, etc.) c. Food additives series : (Sodium Metabisulfite, Citric Ac..