Electrical contacts and switches, assemblies of electrical contacts and switches, electrical push-button contacts and switches, assemblies of electrical push-button contacts and switches; key buttons, key button assemblies and keyboards, key button switch plates, assemblies of key button switch plates, housing and housing assemblies, all the aforesaid goods in the form of parts for electrical contacts and switches and assemblies of electrical contacts and switches

Consultancy regarding installation of electrical contacts, assemblies of electrical push-button contacts and switches and key button assemblies and keyboards