Krishna Diamond Tools Pvt. Ltd. Manufactures Cleanroom Covings for Pharmaceuticals Floorings. Krishna Diamond Tools Pvt. Ltd. Manufactures Stone Covings, Stone Covings India, GMP Covings, Kota Covings, Kotah Coving, WHO-GMP Covings, WHO GMP Covings, Curvings, Pharma Covings, Pharmaceuticals Covings, Clean room Covings, Cleanroom covings etc. The Cleanroom Covings for Pharmaceuticals Floorings have two unique patterns and size of stone covings i.E. Classic and Premium in Kota stone material to absorb the potential of Stone Covings in the growing pharmaceutical industry. The covings are available in sizes of 65 mm X 65 mm X 584 mm [L].