Shanghai Howell Petroleum Additives Co., Ltd. | Address: 549,No.11,Wuhua Road, pudong, shanghai, China 
www.howelladditives.com | Send Inquiry | Phone: +86-(021)-65754307
Shanghai Howell Petroleum Additives Co., Ltd. specializes in the marketing of additives for lube oil which include detergent, ashless dispersant, oxidant-corrosion inhibitor, EP antiwear, oily additiv more...