Asadwewb1 Asadwewb1
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активность: 1 год, 11 месяцев назад
Silicon carbide is also called moissanite. Among contemporary C, N, B and other non-oxide high-tech refractory raw materials, silicon carbide is a widely used and economical one, which can be called gold steel sand or refractory sand. At present, China’s industrially produced silicon carbide is divided into two types: black silicon carbide and […] Просмотр
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