9 Electrical controllers; hollow waveguides for applications in high frequency engineering of the following: copper and copper alloys, precious metals and precious metal coatings, thin-wall tubes of common metals and hardenable copper/beryllium alloys for further processing into corrugated tubes and measuring springs subjected to high dynamic stresses, refined tubes of common metals, precious metal, stainless steels and special materials as guide tubes for test pins or plug-in connections, capillary tubes for measuring and control engineering, hydraulics and pneumatics of copper, copper alloys, stainless steel and special alloys, thermostatic bimetal snap washers and snap elements, thermostatic straps and strips, stamped and molded parts of thermostatic bimetal, contact parts, solid and coated, contact rivets, solid and coated, stamped flexible parts of materials coated with precious metals, contact springs, contact part assemblies, riveted, Tox-joined, soldered, resistance and laser-welded assemblies, deep-drawn and extruded parts for electrical engineering and electronics and for measuring and control engineering of precious metals and their alloys, copper and copper alloys, nickel and nickel alloys, stainless steels and materials with special physical properties with regard to expansion behavior and magnetism, including with electroplated surface coats, cold extruded parts as heat sinks, load-bearing and connecting elements for power electronics, contact parts and contact laminations for collectors, load-bearing plates and contacting plates, composite electrodes for spark plugs, protective sleeves, screening cans, caps and a number of small high-precision deep- drawn parts in special shapes of metallic materials, semi-finished products and memory elements of shape memory alloys for measuring and control engineering, coated materials with precious metal coatings and substrates of copper material, nickel and nickel alloys and steel, as straps, wires, tubes, and profile sections, contact bimetals and coatings of precious metal and substrates of conductive copper materials and all coatable nickel materials and steels, roll seam welded straps and profile sections, electroplated straps with nickel, tin and precious metals, contact parts and assemblies with inserts and coatings of precious metal and precious metal alloys, welded, soldered riveted, if required with electroplated coatings, contact rivets of precious metal, solid and coated, composite materials for electrical contacts as fibre and laminar composite materials, tubes as Bourdon tubes, profile tubes, tubes of coated materials, of special alloys and thin-wall, refined and capillary tubes, deep-drawn and extruded high-precision parts in special shapes of metallic materials, wires and profile sections of precious metal, solid and coated, and of special alloys and superelastic materials