We take the liberty to introduce ourselves as professional manufacturer and exporter of silica fume in the northwest of China. We built up two factories in Ningxia and Gansu province. . For our company and product details, please check our website:- www.gslxy.cn.We only send you some products'specification and usage as your referencein the following. specification: ��������������������������옙oducts: silica fume(SiO2 85%--96%)��������������������������옙isting form: amorphism thin powder��������������������������옙E.T Fineness: 15-27 m2/g��������������������������옙lk density: 550kg/m3--700kg/m3 ��������������������������옙tivity target:90%--110%��������������������������옙ter content : above 90% 1% Max under 90% max 3%��������������������������옙cking : Jumbo bags 850kg/packet or 900kg/packet��������������������������옙antity: 16mt-18mt20 FCL /26mt 40FCL��������������������������옙rms of Payment : T/T ,L/C or others Usage: Silica fume is a very reactive pozzolan when used in concrete.Also it canbe used in the production of refractory and porcelain, to raise intensityand durability.And it can improve the material overall performance as a filler; used in paint,coating,resin, rubber and other high molecular material. Please don't hesitate to contact us if you interest in our products.We would supply high quanlity products and preferential price.