1
Unprocessed artificial resins as basic material used as coating, such as coatings based on plastic synthetic resins, diamond-like layers of protection or layers containing carbon and ceramic material for improving hardness, resistance for use, friction coefficient, elasticity and chemical inertia of workpieces, machines parts, tools, engine parts, casting moulds
6
Chrome-coated steel sheets for improving hardness, resistance for use, friction coefficient, elasticity and chemical inertia of workpieces, machine parts, tools, engine parts, and casting moulds
17
Semi-processed plastic in the form of films, sheets, tubes, bars, or rods for improving hardness, resistance for use, friction coefficient, elasticity and chemical inertia of workpieces, machine parts, tools, engine parts, and casting moulds
40
Material treatment, namely, application of protective coatings, films and layers of metallic and non-metallic material for obtaining wear resistant and corrosion resistant surfaces, such as by sputtering, thermal spraying, vacuum vapour coating, plasma spraying