?The 1980s was a period of rapid development for sand and gravel production line industry, coupled with the prevailing social environment, manufacturers has no limit as long as the documents are complete. This phenomenon leads to the set up of many small gravel factories, but they are not skilled in sand making, which make sand quality on the market is not so excellent.

? As a result of unplanned mining companies before, it caused serious environmental impact and waste of resources. Now small sand making plant manufacture is faced with the transition, but small companies make the transition very difficult. Because the small enterprises lack sufficient capital and advanced technology, and even some manufactures occupy the market by low price in sand making plant, which virtually intensified unhealthy competition among enterprises in development. ?

?Adjusting product structure in sand and gravel industry, changing the mode of production according to market demands for sand and gravel making, we should take the shape, type, size and so on into consideration. We should have higher performance requirements for the level and type of sand and gravel production line equipment in manufacturing. We can make the product based on the fundamental quality of an enterprise, providing a good environment for healthy competition among companies, so that we can avoid unnecessary consumption. By doing this our stone production line is the first-class companies both at home and abroad.