Profile: Krishna Colours & Constchem Pvt. Ltd. is an exporter and supplier of construction chemicals. We are an ISO 9001:2000 certified company. Our products include admixtures, waterproofing systems, sealants, engineering grouts, industrial flooring, surface treatment, and curing compounds. K Crete NP is based on processed lignosulfates, and is supplied as a brown liquid. It works by improving the dispersion of the agglomerates within the concrete mix.