... main applications are as following. A: parts surface heating treatment, parts surface hardening, tempering, annealing, etc.B: metal brazing ... & Extraction ect.Heat treating services including HSS Heat Treatment, Induction Hardening, Hardening and Tempering, Gas Carburizing, ... Spherodizing, Annealing, Normalizing, Stress Relieving, etc. Heat treatment is used to fabricate tool parts, jigs & fixtures, ...