Tungsten VM (tungsten vacuum metalizing) is mainly used for the evaporation of aluminum, with the additional option of utilizing Molybdenum and Tantalum.

T&D is a producer of tungsten lamp filaments, wire filaments, and other specialty components for leading lighting manufacturers.

Today’s changing lamp technology and lighting industry requirements demand new filament designs daily. There are thousands of filament designs in the marketplace that vary with respect to parameters such as basic coil type (single coil or coiled coil), bulb shape, gas fill, service life, and lumen output.

Schematic	Style Description
	Tungsten Horizontal Helix
	Tungsten Z-Coil. Open or Closed Bottom.
	Tungsten and Molybdenum Z-Coil with Horizontal legs, also Crucible Heater
	Tungsten and Molybdenum Double Helix, can be tapered
	Tungsten and Molybdenum Vertical Helix
	Tungsten and Molybdenum Vertical Conical Basket
	Tungsten and Molybdenum Conical Basket, V-Style legs
	Tungsten and Molybdenum Conical Basket, Z-Style legs
	Tungsten and Molybdenum Conical Basket, Horizontal legs
	Tungsten and Molybdenum Cylindrical Basket, V-Style legs
	Tungsten and Molybdenum Cylindrical Basket, Z-Style legs
	Tungsten and Molybdenum Cylindrical Basket, Horizontal legs
	Tungsten and Molybdenum Open Helix
	Tungsten and Molybdenum Closed Helix
	Tungsten and Molybdenum Flat U Loop
	Tungsten and Molybdenum Flat O Loop
	Tungsten and Molybdenum Spiral Crucible Heater
	Overwrapped Tungsten Rod (Tungsten rod overwrapped with fine tungsten wire in honeycomb fashion)