Langfang Tongxin production company is a thermal insulation material and chemical building materials producers as a whole, with the most advanced production technology and equipment, a total investment of more than 70 million yuan, benefits can be good. Insulation products, insulation properties strong, has passed ISO9002 international quality system certification and ISO9001 international quality system certification, product testing by SGS. \r\nThe company's goal to talk about the quality, reputation and customer needs is our goal, customer satisfaction is our greatest satisfaction. We are willing to work with new and old customers hand in hand together to create greater wealth. Welcome your call!