Internet sales of plastic windows in standard sizes, which are in stock immediately for purchase. Also doors, gates, window sills and more. Dimensions and colours that are not in stock are delivered directly from the factory.

Internet sales of building materials at wholesale prices with free shipping throughout the country. Own stores and e-shop. We offer products of the brands Heluz, Porotherm, Ytong, Porfix, Bramac, Tondach, KM Beta, Mediterran, Schiedel, Isover, Knauf, Rigips, Diton, Best, Presbeton, Top Stone, polystyrene, cardboard and others.

Blown insulation from our company can save up to 40% of heating costs in 4 hours. All this with a 5-year warranty on both materials and labour. We always try to give our customers good advice in the first place, suggest the ideal insulation parameters, recommend the best insulation material.

We sell and service electronics, power and garden tools and hardware. We sell built-in and freestanding appliances, televisions, camcorders, cameras, telephones and audio equipment. You can also find steamers, games consoles, leaf vacuum cleaners, ladders and garden substrates.

Kosyka has been a reliable partner for 30 years in the field of connector assembly, cable harness manufacturing and electromechanical assemblies for consumer electronics, automotive and other industries. We are the exclusive distributor of Binder connectors for the Czech Republic.