Stone crusher is commonly used in mine, melting, building, road, railway, water conservation and chemical industries. The most commonly used stone crushers are: jaw crusher, impact crusher, pneumatic selective crusher, hammer crusher, impact breaker, roller crusher and crusher combined. Characteristics of jaw crusher are: big reduction ratio, even coexistence, simple structure, stable running, handy maintenance and economical operation. In modern society, nothing can do without mechanical equipment. As a developing country with a vast territory and a large amount of population, housing and transportation become one of the most important issues.

However, at present, the housing and transportation in China cannot meet the demand of people and the development of society. Therefore, Chinese government vigorously develops construction industry to meet the demand of people, and then develop the economy to meet the demand of society. In modern society, nothing can do without mechanical equipment. As a developing country with a vast territory and a large amount of population, housing and transportation become one of the most important issues. However, at present, the housing and transportation in China cannot meet the demand of people and the development of society. Therefore, Chinese government vigorously develops construction industry to meet the demand of people, and then develop the economy to meet the demand of society.

Generally speaking, the building stones are the most important part in construction industry. Without the building stones, the construction cannot exist any longer. However, the mountain stones are huge and hard. It is impossible to make the mountain stones into stones with hand crushing building. Therefore, the rock crusher, aiming at crushing the stone, becomes the right arm for construction industry. The rock crusher has many types. When crushing the relatively soft stone, the demand for the rock crusher is not high. The PF-I series of impact crusher materials processes with side length between 100 – 500 mm and maximum compression strength of 350Kpa; the FP-II series of impact crusher is used for crushing of medium rigidity materials like limestone in cement plant.