rubber plastic foaming thermal insulating materials are produced by the cutting-edge technology introduced from abroad and the automatic production line, with nitrile rubber and polyvinyl chloride in excellent performances as the main materials and via special processes of banburying, sulfuration, foaming, etc. Its main characteristics are as follows: With closed foam structure and low density, the products are in low thermal conductivity, water vapor permeability and water absorption and good flexibility, and they are easy to be used in construction. The products allow a wide temperature range for application from -40°C to 105°C, with good age resistance, and the fire resistance performance is up to the national standard level B1. Item