JPK Logiciel is created in 1983 by Mr. Jean-Pierre KOLODZ. Its innovating concept is CAD. Since 1984, the principal software product line published by JPK Logiciel is called “D-CALC”. This software will become year after year more specific and more trade directed. Since 1987, the concept of the “All in one system” is in place on all range D-CALC. Today, we count more than 8000 D-CALC licences in 25 countries. We are present on the sectors of markets of artisan, small and large-scale industries. JPK Logiciel proposes solutions integrated for these customers wishing: a software of technical drawings (CAD) of estimate, orders, invoicing, of stock management, and links with ERP, MRP, EDI, ODBC, CNC machines. The heart of the software, compatible with Autocad, allowing more flexibility and adaptation to all cases met in the user, for all the trades of fenestration, façade, curtain-wall, sunroom and the electrical of building.