... -vacuum is widely used for metal heat treatment, meticulous and ceramic sintering, different kinds of crystallization production, sintering monocrystalline silicon for ... ., Ltd. (HSCF)Address:NO.94 West Road of Station,4Th Floor HaiTianXindu ,Chengguan,LanZhou City,GANSU PROVINCE, CHINATel:+86-931-8893573 ...