... special processing produce hot-rolling and cold-rolling products with high quality W slabs, such as W electrode plate, heater, heat- ... and electric vacuum componentsfor producing heating elements and refractors in high temperature furnacesfor producing W-boats, and heating units in ... , Wester Union, L/C ,ect .2, Payment Terms : Decided by two sides. 1,Packaging: Vacuumize in side wooden case out side ...