About product and suppliers: Alibaba.com gives 4,980 petroleum refining industry products. About forty one% of these are textile auxiliary agents, 37% are leather auxiliary brokers, and 35% are electronics chemicals. A wide variety of petroleum refining business choices can be found to you, reminiscent of vital cleansing / residue free, sudsing / foaming. You too can choose from free samples, paid samples. There are 4,976 petroleum refining trade suppliers, mainly situated in Asia. The top supplying international locations are China (Mainland), India, and Pakistan, which supply 98%, 1%, and 1% of petroleum refining trade respectively. Petroleum refining industry products are hottest in Southeast Asia, Home Market, and South America. You can guarantee product safety by deciding on from certified suppliers, including 1,997 with ISO9001, 905 with Other, and 360 with ISO22000 certification.