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Tianjin kaiwei and yongli united chemical co.,ltd was found on the basis of Chevron Lummus Global LLC ISO-FINISHING technology along with its Nobel-Metal catalystfor high quality white mineral oil production since 2008, now KWYL owns the biggest and most advanced white mineral oil refinery among Asia-Pacific area,as weel as its whole series of white mineral oil product.we are manufacturing of white mineral oil about 160,000 per year. Liquid paraffin oil &white miner...