... to mold. Molding shrinkage rate is small, volume shrinkage rate between 1% ~ 5%. The use sandwich structures not only can ... and reliable, very easy to install. Good sealing performance: use flexible caulking material, to ensure waterproof, thermal insulation, good ... for foreign engineers to install the combined office in Huizhou, Guangdong, China is a good example in manufacturing prefabricated house.