... discharge lamps, filament wire for halogen lamps, tubes for annealing filament wires, Evaporation boats for coating cold-light reflectors, ... grids, rings, and anode and cathode holders, heat sinks of passive cooling devices, boats and cups for capacitors sintering etc. ... , collimators, shields, containers and components for X-ray and g-ray radiation protection etc.4、High temperature furnace: furnace ...