... produced by Zhongyuan Dahua Group, breaking the multinational long-standing monopoly in the field of this technology and ... by Puyang Guolong Logistics Co., LTD, a subsidiary of Zhongyuan Da Hua Group Co.,LTD. Greencos melamine foam is a ... . These characteristics make the product widely used in building industry, industry, vehicle manufacturing, plant construction, thermal engineering, installations, ...