Vietnam has a population of near 1000 million. Yunnan is carrying out infrastructure construction all over the country. Experts that the country could run out of sand within five years due to over-exploitation of the natural product, local media reported. The artificial sand can be used to instead the natural sand. It was produced by sand making and sand washing machine . artificial sand has many advantages such as: The factory production can establish a quality control system from a series of processes such as material selection and crushing. The physical and mechanical properties of sand can be consciously selected to produce hard rock sand, avoiding the use of soft, weathered rock, and the amount of mud (block) can be manually screened. The artificial sand is 10~20% cheaper than natural sand. The particle grading and fineness modulus of the mechanism sand can be adjusted. According to the needs of the project, combined with the characteristics of the base metal and...