Densified microsilica and undensified microsilica SF85 SF90 SF93 SF95 SF97 Any interested in Haoyet Silica Fume, welcome to tell us your specification for the better offer. Thanks and regards, Peggy Shenzhen Haoyet Technology CO.,Ltd. Address : No.1309,Mingtai Business Center, No.73,Nanlian Road, LongGang Distric, Shenzhen, China Tel : +86 755 28319826 Fax: +86 755 28509100