Raw materials, complete sub-assemblies, design solutions, production equipment, hardware and stationery – all are required by E-T-A in one form or another. Some items are needed more frequently than others, but they must all meet very high quality standards.

Purchasing sector moulded parts / tools

	moulded parts (thermoplastics, thermosetting plastics)
	elastomers, semi-finished products
	insulation material such as mica and foils

Purchasing sector metal parts / semi-finished products

	bands of copper and brass
	thermo-bimetals and steel
	rivetting contacts, welding contacts
	pressure springs, tension springs, torsion springs, spiral springs
	fasteners such as screws, nuts, washers, rivets, as well as electrical connectors
	resistors, punched parts, turned parts

Purchasing sector electronic components

	printed circuit boards with and without components fitted, hybrids
	active components such as Integrated Circuits (IC), discrete components
	opto-electronic parts
	passive components such as resistors, capacitors, inductors, oscillators
	sub-assemblies
	switches and coders, micro-switches

Purchasing sector services / investments

	services, maintenance contracts
	capital goods such as machinery, buildings, IT hardware and software,
	logistics