1.oil and gas well structure proppant sand 2.tested by Proptester 3.passed ISO:9001-2008 4.supplier of sinopec and petrochina 1.oil and gas well structure proppant sand A.Pruduct information BrandGongyi Tianxiang Refractory Co.LTDProduct NameHigh-strength alumina ceramic proppantPlace of originGongyi ,Henan,China mainlandMaterialBauxite, manganese powderDensityLight, medium, highSize30/50,20/40, ...