Refractory material is the basic material of iron and steel industry. The refractory industry and the iron and steel industry promote each other and develop together. With China's economy entering the new normal, a series of new characteristics have emerged in the iron and steel industry: overcapacity, declining profitability, enhanced environmental and resource constraints, and more challenges in transformation and upgrading. The new normal of the iron and steel industry has put forward new requirements, new thinking and new changes for the refractory industry in the upstream of the industrial chain. In recent years, the performance and application of refractory materials have shown the characteristics of characteristics, diversification, refinement, high efficiency and low consumption. The development of refractory raw materials must be adapted to it, and it will also be diversified, enriched, and characterized. State

Polyethylene polypropylene polymer waterproofing membrane using polymer cement paste, can be in rainy days (moisture content of more than 50%) construction. Polyethylene polypropylene composite waterproofing membrane is not limited by the moisture content of the base layer below 9%, to ensure the construction progress. Polyethylene polypropylene polymer waterproofing membrane structure features: 1, three-layer structure, surface enhancement. 2, the core layer-the main waterproof layer uses a higher than the degree (macromolecular side chain) of linear low density polyethylene (LLDPE), its extensibility, water impermeability, flexibility, puncture resistance, low temperature resistance. 3. The surface is polypropylene (polyester) non-woven fabric, through the core