1. Silicon metal #553 2. Grade:553 specification:(10-100)mm; (50-150)mm;(2-25)mm ... greatest value. 2. Our main products include:Non ferrous metal:Pure magnesium metal, such as magnesium ingots(7.5kg, 300g, ), mg powder ... , 3303, 411, 421, 441, 553 etc.), Manganese Briquette. 3.4. Application: Silicon metal is also called industry silicon and crystal silicon, is a basic industrial ...