Langfang chaochen Thermal Insulation Material CO.,LTD is a science and technology enterprise a set of production,Website:http://www.lfinsulation.com, sales, research and development,construction in one. our main products are insulating refractory insulation, sound-absorbing material, chemical material, sealing material categories. Have engaged in this industry for more than 20 years, have rich experience of production and construction, and have been authenticated by SGS, we also have CE, ISO certifications...