Prosperous Morality trading Co;Limited(PMT) is a company mainly concentrates on oil-drilling supplies ,with 7 years experience in dealing with CNPC and experting to Canada and America.. We invest a our own barite milling plant in Guizhou province and also have established a stable and longterm cooperation relationship with many manufacturers in Guizhou province ,Guangxi province,Shanxi province. where is rich in high quality barite. and ceramic proppant.