Sand, pebble (gravel) stone, crushed stone, block stone, material stone and other materials used in water conservancy projects can be collectively referred to as sand and gravel aggregate. Aggregate size greater than 5mm is called coarse aggregate, that is, we often say the stone, the aggregate size less than 5mm is called fine aggregate, also known as sand. Sand and gravel are the main building materials for structures such as concrete and stacked stone in water conservancy projects, and they are also non-renewable resources.

With the overexploitation of natural sand and gravel resources and the emphasis on ecological environmental protection, the management of river sand mining has been strengthened in various places, and mining has been prohibited in many rivers. Since last year, the price of sand and gravel around the world has shown a skyrocketing trend, and now some areas have reached 100-130 yuan/ton, and some products have reached more than 200 yuan/ton, which, together with other factors, has led to a rise in the unit price of commercial concrete per cubic meter from about 260 yuan in the past few years to 450-500 yuan at present.

According to incomplete statistics, since January to mid-June 2018, the highest increase in the price of sand has reached more than 600%, and the price of stone has increased by more than 114.29%, and it is still continuing to rise; during the same period of time, the rate of increase of concrete has risen between 27-31%, and the price of cement has risen by 32-37%, and the price increase has also been alarming.

In order to ensure the continuous supply of sand and gravel aggregate, the use of modern technology and machines to mass produce high-quality mechanism of sand and gravel, has become the necessary means to make up for the gap of sand and gravel aggregate at the moment. In the field of sand and gravel aggregate crushing, General Mining Machinery has the professional technology to fully satisfy the crushing of various soft, medium and hard ores, and owns a full set of machines and equipment and professional program design covering coarse crushing, medium crushing, fine crushing and sand making, sand washing, feeding, screening, conveying and mobile crushing and screening required by the sand and gravel aggregate industry, and we have fine craftsmanship for each piece of equipment, and tailor-made high-quality crushing equipment for the customers according to their specific process requirements. For each piece of equipment, we are meticulous in crafting, according to the specific process requirements of customers to customize high quality crushing equipment.

SMPCRUSHER is a high-tech company integrating R&D, production and distribution, and provides crusher, sand making, grinding equipment, mobile crushing station, etc. mature products and solutions used in aggregate, mining and waste recycling. At present, we have established cooperative relations with customers in more than 170 countries, and helped them plan reasonable programme and realize scientific process.