This production line produces 1000 tons of cobblestone fine sand aggregate in a short time. It requires green and standardized workshop design: it aims to form a demonstration effect for the healthy development of green mines in the local sand and gravel aggregate industry.The customer comprehensively considered the main factors such as production equipment technology, production line technology, output demand, construction period and after-sales service system, compared with a number of mining equipment manufacturers, conducted field visits and public bidding, and finally established the cooperation with Dahongli Company.