... Foam is developed and produced by Zhongyuan Dahua Group, breaking the multinational long-standing monopoly in the ... sold by Puyang Guolong Logistics Co., LTD, a subsidiary of Zhongyuan Da Hua Group Co.,LTD. Greencos melamine foam is a ... building industry, industry, vehicle manufacturing, plant construction, thermal engineering, installations, air-conditioning systems, aerospace navigation area, electric ...