In 2002, GRASi industry co.,ltd was established in shanghai . Using high-tech nano technology to develop GRASi series various types of functional waterproof,anti-corrosion,stain proof nano protective agent  in cement, stone, wood, metal, fabric, leather and other professional fields.  GRASi aims to be the world's best nano waterproof protective material professional factory .Through the unremitting efforts,  in nano waterproof agent industry， GRASi won wide popularity and reputation, GRASi products used in many world influential architecture ,like the Coca Cola factory,Shanghai World Expo, Disneyland etc.Products are sold in the United States , Europe and other developed countries and regions, cooperate widely with international well-known enterprises. GRASi never slack off,always use dedicated and professional sense of responsibility to meet the requirement of modern people on high quality.