The Material civilization has been improved in almost all the fields during past hundreds of years especially 20th century, but we ingored enviroment rely on, environment was destroyed, zoology\'s balance broken, air and water resources polluted ...

Zhengzhou Yonghua Machinery Manufacturing Co., Ltd. is a professional manufacturer specialized in the production of coal briquette equipment, building material mining machinery and metallurgical processing equipment. After 30 years development, our ...

Shenzhen Become Industry & Trade Co., Ltd is a High-tech Corporation specialized in the R&D, Manufacture and Distribution of new materials products with features environmental protection, healthcare energy-saving. Our main business ranges Living, ...