挤塑保温板，即挤塑聚苯乙烯保温板，是一种以聚苯乙烯树脂为原材，加入其它聚合物后，经加热挤塑形成的一种发泡硬质塑料板。板内形成许多具有封闭性的气泡结构，有承压力强、防水性能好、耐化学腐蚀和较强的抗老化能力的特点，被广泛应用在建筑物保温和潮湿环境的防水防潮中。挤塑保温板在我国真正具有实际意义的发展时间，不过是10年左右。但是近几年来，通过各生产企业的大力推广，已经逐步得到了广大建筑行业业内人士的认可，在国内各主要经济区域中有了较大的覆盖范围。在可见的未来，这一块的市场仍将持续增长，国内的生产能力仍然有提高的空间。
Extruded thermal insulation board, that is, extruded polystyrene insulation board, is a kind of foam hard plastic plate formed by heating and extruding the polystyrene resin as the raw material and adding other polymers. There are many closed bubble structures in the plate, which have the characteristics of strong pressure bearing, good waterproof, chemical corrosion resistance and strong anti-aging ability. It is widely used in the waterproof and moisture-proof of building insulation and wet environment. The development time of Extrusion insulation board in China is only 10 years or so. But in recent years, through the vigorous promotion of the production enterprises, it has been gradually recognized by the broad masses of the construction industry, and has a larger coverage in the major economic regions in China. In the visible future, the market will continue to grow, and domestic production capacity still has room for improvement.