Sand-lime bricks since 1952 In 1952, the company was founded with the aim of building and operating sand-lime brick factories and participating in such companies with its headquarters in Haltern am See, district of Sythen. The construction of the sand-lime brick plant on the hereditary building site of the Duke of Croÿ took place in 1952/1953, so that production began at the end of 1953 with 2 presses and 2 hardening kettles. In the following four decades, the company was continuously developed through technical know-how and the production capacity was gradually expanded through the installation of further sand-lime brick presses and the associated peripherals. In order to be able to supply the cut sand-lime brick products demanded by the market, the construction of a factory for the production of sand-lime brick flat elements was started on the company premises in Sythen in 1993. In 2006 our subsidiary, KSPE Kalksandstein-Planelemente GmbH & Co. KG, took over the production of the entire product range. Since then, our company has acted purely as a holding company. The shares in Vestische Hartsteinwerke GmbH & Co. KG are held by the sole limited partner, von Croÿ KG, Dülmen. Since 01/01/2010, sales have been controlled by UNIKA Kalksandstein Westfalen GmbH as a newly founded company. All products of the three UNIKA sand-lime brick factories located in North Rhine-Westphalia will be sold through the new company »Vestische Hartsteinwerke GmbH & Co. KG, Haltern am See » KSPE Kalksandstein-Planelemente GmbH & Co. KG, Haltern am See »Ruhrbaustoffwerke GmbH & Co. KG, Castrop-Rauxel marketed. With the new structure, we are optimizing processes and reducing interfaces by bundling all sales activities in one company. At the same time, however, we continue to rely on regional identity, customer proximity and customer care. Customer relationships should become clearer and more transparent - with the aim of further increasing customer satisfaction.