... silicon powder - X, L,U, W, U right shape -Dia:3/6,4/9,6/12,12/24mm U type Silicon ... of metallurgy, glass, ceramic refractory, crystal electronic device, industrial furnace manufacture, etc.. It is an essential ideal element ... M1800Uses metallurgy, glass, ceramic refractory, crystal electronic device, industrial furnace manufacture, etc..Authentication ISO9001:2008 Quality certificate Installation The ...