More and more new types of natural stones capture the market. What is particularly attractive for the client, is a continuous challenge for the processor. Each unknown type is new territory to him, because each type of stone can have a different reaction to the installation material. Adverse reactions such as efflorescence or discolouration can appear unexpectedly. This results in claims and correspondingly high costs. PCI Augsburg GmbH responded to this challenge by developing the PCI Carra system - a product line that takes the specific characteristics and requirements of all natural stones into account with only a few products.