The Finnish Electrotechnical Trade Association (STK) is an association that represents major players in the electrotechnical trade in Finland. With the aim of promoting the competitiveness of its members and the entire supply chain, STK provides information services and actively contributes to the development of the electrical branch in the country. As a part of the European Union of Electrical Wholesalers, STK offers various services to its members.

STK's services include publishing quarterly statistics on electrical wholesales, light fittings, lamps, heating apparatus, and sales of manufacturers and importers to wholesalers. Additionally, STK offers a unique product database called Sähkönumerot.fi, which contains information on 600,000 electrotechnical products. This database provides product descriptions, technical information, documents, pictures, and links to suppliers' product pages.

Furthermore, STK engages in educational cooperation with institutes to enhance education in the electrical branch and participates in trade expos to introduce careers in the electrical industry to young people. The association also engages in general lobbying activities to protect the interests of its members and promotes themes related to the Wellbeing Through Electricity vision 2030.

STK is committed to keeping its members well-informed through its monthly newsletter and websites, stkliitto.fi, Sähkönumerot.fi, and Hyvinvointiasähköllä.fi. By organizing seminars, publishing e-newsletters and articles, and promoting electric vehicles, STK works collaboratively with other electrical industry associations to drive the vision of Wellbeing Through Electricity.

STK's membership includes major companies such as ABB, Ahlsell, Airam Electric, and many more. These companies are leaders in power and automation technologies, installation products, light sources, and other electrical products. With their contributions, STK continues to foster growth and innovation in the electrotechnical trade in Finland.