如未注明標記，裝配前必須進行稱重和選配，使各排上的錘頭在圓周方向和軸向重量的配置符合'十二五'期間，新線投產規模要達到3萬公里，也就是到'十二五'末期，國家鐵路運營總里程要從現在的9.1萬公里增長到約12萬公里。
這就更加需要廣大的碎石機企業做好自身建設和發展，做好質量監督工作，生產出符合要求的產品和設備，努力尋找更好的市場。規劃創優，方案切實，措施到位，確保質量。推廣應用新技術新工藝新材料。另外，得益于我國經濟發展水平的提高，各項技術設備日益完善和發展，特別是我國的礦山設備生產企業加大自主的創新力度，在新產品的研制上不斷加強投入并出產大批的自主知識產權的礦山設備，這更助推了我國礦山機械行業的飛速發展。
因此我國礦山機械的發展是內外兼修，厚積薄發的結果，是礦山機械行業共同努力的結果，會隨著我國經濟發展迸發出更大的發展潛力，從而使得中國的礦山機械產品走出國門，走向世界。
Henan LIMING Heavy Industry Science and Technology Co. LTD which mainly manufacture large and medium-sized crushing and grinding equipments was founded in 1987. It is a modern joint-stock corporation with research, manufacturing and sales together. The Headquarter is located in HI-TECH Industry Development Zone of Zhengzhou and covers 80000 m 2. Another workshop in Shangjie Industry Park covers 67000 m 2. Over the more than 30 years, our company adheres to modern scientific management system, precision manufacturing, pioneering and innovation. Now LIMING has become the leader in domestic and oversea machinery manufacturing industry.
LIMING brings a large number of high-qualification talents together. Bai Yinghui, general research and development engineer, is a well-known expert in crushing and grinding area who won the youth medal of technology of the state council and receives special government allowance. LIMING owns an experienced service team, offering the customer free design and professional skill training and live guide for installation and debugging. The company's service networks have spread all over the country. Established client files, and mix the traditional door-to-door service with online service together, complementary the advantages. LIMING has won high recognition from clients.
The company mainly manufactures mobile crushers, stationary crushers, sand-making machines, grinding mills and complete plants that are widely used in mining, construction, highway, bridge, coal, chemical, metallurgy, refractory matter, etc. Product quality is life, and scientific innovation is motive power. LIMING got ISO international quality system certification, European Union CE certification and Russian GOST certification. The company has strong research and development strength and innovation.
LIMING machinery research institute was founded in 2005 which is the most powerful comprehensive technological research institute in the domestic mining machinery industry and provides top scientific research platform for professional personnel. Up to now, LIMING has won 10 national patents, 24 national utility model patents and 3 provincial science and technology achievement awards. The company products remain the international leading level by strengthening international exchanges and cooperation all the time, and has won a wide range of international market, such as Russian, Azerbaijan, Kazakhstan, Turkey, Kuwait, South Africa, Egypt, Vietnam, Malaysia, India, Australia, Korea, Canada and European Union,etc.
Through more than 30 years' hard work, LIMING's staff built supremacy of credibility, excellent quality, service "LIMING" brand, and has made outstanding contributions to the development of mechanical manufacturing industry for China and the whole world.
