... treating services including HSS Heat Treatment, Induction Hardening, Hardening and Tempering, Gas Carburizing and ect. ... following. A: parts surface heating treatment, parts surface hardening, tempering, annealing, etc.B: metal brazing, high ... services including HSS Heat Treatment, Induction Hardening, Hardening and Tempering, Gas Carburizing, Case Hardening, Toughening, Carbo Nitriding, Core Refining, ...