Langfang Osking Business Co., Ltd, located in the largest production base of heat insulation materials in China (Dacheng, Langfang City, Hebei Province), also with convenient transportation. Our company main product is fiberglass wool, aluminum silicate, mineral wool, XPS and other series of diversified fire-resistant insulation materials. Our company has passed the ISO-9001 International Quality System Certification and has a perfect quality management system.