Due to the time of impact crusher and counterattack Sand appear different, Impact Sand (2003), the third generation of Sand (2005) So, we call the second generation of Sand and third-generation Sand Sand small, in fact, their works are different, are very efficient sand sand making equipment. Currently more manufacturers say that the fourth generation of Sand, the fifth generation of Sand, Sand sixth generation, the seventh generation of Sand and so on, in fact, not so much Sand. Sand only: Impact Sand, the third generation of Sand and rod mill Sand. VSI crusher lubrication system overview VSI Series Vertical Shaft pump lubrication system is a dual complementary guarantee oil, no oil flow, no oil pressure, oil temperature is too high when the automatic shutdown; automatic heating and cooling systems, to ensure the bearing lubrication always in the best condition. Thus completely solve the heat problem bearings, spindle bearings to maintain constant temperature, extended maintenance cycles and life. With the domestic infrastructure construction in full swing crusher manufacturers, the use of sand and gravel in climbing, but because of some of the relevant provisions of national policy, domestic natural sand mining has been strictly limited, resulting in natural sand has been out of stock Impact Sand, manufactured under this people and equipment in addition to artificial sand, gravel makes a gradual increase in production for national construction provides a good foundation for artificial sand and gravel is more natural to want to have a good performance, many manufacturers also sand such as bamboo shoots emerge, then choose a high-quality sand crusher manufacturers became the primary problem, then we should do to choose a high-quality sand making it? River gravel crusher, sand making Jinggu County, Henan by Henan new Senda Heavy Machinery Co., Ltd. The new Senda. Henan new Senda Heavy Machinery Co., Ltd. (www.hnsdzg.com) strong, credible, in Zhengzhou crushing grinding equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Yuxin Senda and you hand into the brilliant, for a better future!