Huaxin (Yangxin) billion tons mechanism sand and gravel project designed by Wuhan Institute of Building Materials, which is the largest mechanism sand and gravel project in the world. The project, with a total investment of 10 billion yuan, started on December 28, 2020. The first phase of 50 million tons of annual production capacity has been put into production and is running smoothly, and the second phase of 50 million tons of annual production capacity is scheduled to be put into production at the end of 2023.