One-top sourcing of refractory metal parts. Tungsten has the highest melting point of all metals ... , vacuum furnace, high temperature furnace, silicon industry furnace, quartz glass, metal extracting, , machinery processing, glass and ceramic industries, etc. 4. ... & professional service. 5.SMT’s contact information:Xi’an Htemps Metal Materials Co.,Ltd. (Jack Tian)Tel: 0086-29-87853525 Mobile:0086-152 ...