... We are devoted to providing our customers with superior quality productts and service at competitive cost, helping our customers ... plate, roil,rod, bar etc.), Silicon Metal(2202, 2502, 3103, 3303, 411, 421, 441, 553 etc.), Manganese Briquette.3. GradeComponentSi(%)min. ... 50.50.50.3-----4. Application: Silicon metal is also called industry silicon and crystal silicon, is a basic industrial raw materials ...