"Wer liefert was?" (abbreviated below as WLW) is the number one among the Supplier Search Engines for the business-to-business sector.

As early as 1995 WLW went onto the Internet and has been available to all its users free of charge ever since.

Whatever you are looking for - with WLW you will easily and quickly find competent manufacturers, suppliers and service providers for all your commercial needs.

WLW supplies detailed and reliable information on companies, products and services which is consistently to up-to-date. Thus you will always be able to take the correct purchasing decision.

Since 1932 the company Wer liefert was? GmbH has been offering contact details and reliable information on suppliers of products and services in the b-to-b sector. Since 1994 Wer liefert was? has been active in the Czech Republic and Slovakia. The company's headquarters for both countries is in Prague.

At the beginning of 2009. WLW Group became a member of Swedish Bisnode Group, one of the leading European providers of digital business information.