Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rockcomposed of clay or volcanic ash through low-grade regional metamorphism. It is the finest grained foliated metamorphic rock...

Quality and in-time-delivery are key factors in a successful project. Usually delivery time can be controlled properly by setting up the production schedule; however, the quality of the products can only be checked on installation site. To avoid such issues, it is important to have a pre-installi...