Shangqiu friendship import and export trade Co., LTD. Is a professional high-tech unit that research waste tyre, rubber, plastic and oil refining technology and equipments. Our technical supports: 1.Guangzhou energy research institute of Chinese academy of sciences. 2.Shangqiu Donghe new energy research institute. 3.15 doctors and 3 postdoctoral tutors that professional in researching waste tires, plastic, waste oil refining technology. 4.1 national expert excel in waste tyre waste ...