May 16，Construction Machinery Industry Science and Technology Festival co-sponsored by China Construction Machinery Industry Association and High-end Equipment Research Institute of Zhejiang University（Hereinafter referred to as the Science and Technology Festival）Grand Opening in Hangzhou。Sany Group was invited to participate in the event.，Director of Sany Group、Yu Hongfu, President of Sany Heavy Industry，Cao Donghui, Deputy Chief Engineer of Sany Heavy Machinery，Liu Kui, Director of R & D Management Headquarters of Sany Group，Miao Xionghui, General Manager of Sany Power Transmission Dragon Company，Wang Tongxuan, Deputy Director of Chief Engineer Office of Sany Heavy Machinery，Fan Guangyi, deputy general manager of Sany Transmission Marketing Company, attended the meeting.，And carry a host product、14 Core Components Products Appeared at the Science and Technology Festival。

The morning of May 16，Yu Hongfu at the Science and Technology Festival《Practice and Innovation of Sany under the Guidance of New Quality Productivity》Keynote report，Put forward“Developing New Quality Productivity for Construction Machinery Industry，The core is innovation，The key is quality.；The formation of new quality productivity is not a denial of traditional business.，It will bring new opportunities for the development of traditional industries.”。He introduced in detail the background of two major opportunities faced by construction machinery.，To achieve globalization, Sany Group、Digitalization、Low-carbon transformation，Have the courage to explore，Be bold and innovative，Many brilliant achievements have been made.。

At the Science and Technology Festival，Sany Group demonstrated the electric drive gearbox on the spot in the AC area.、Electric machinery、Hydraulic parts、Chassis part、Filters and other 14 core components independently designed and developed。

350GACast one-piece track shoes，For 200~300tMine super large excavator，It has high wear resistance、Long life、Convenient maintenance and other advantages。Plate section integrated design is adopted，Reduce the overall weight by 3 percent%；German standard high alloy steel is selected，Unique heat treatment process，Wear resistance increased by 15%；Retaining ring+Stop Block+Pin shaft combine type limiting mechanism，Disassembly and assembly efficiency increased by 50 percent%。 

Concrete pump truck digital boom hydraulic cylinder，High strength aluminum alloy is used，10% lighter than similar products of other brands%；Using electronic images、Accurate positioning of telescopic movement of piston rod based on visual sensing technology；And that measurement precision is high、And that anti-interference capability is strong，And that digitalization of the hydraulic cylinder is realize。

190 plunger pump，He has won the second prize of national technological invention.，Adopt electric proportion+Constant power+Pressure cut-off control，Displacement up to 190ml/r，Maximum speed up to 2500r/min，Maximum power 282.5kW；Satisfy the trailer pump、Pump truck、Crawler crane、Roadheader and other host products are used in a variety of complex and harsh working conditions.。

STEType 228 electric drive transmission，Support two modes of automatic and manual shift，Independent development of electronic control system，Intelligent and precise slope recognition and slope processing，Not only the structural design is reliable,，Longer life，4000hZero failures，Synchronizable coverage Denso can match 5tAnd 6tElectric loader requirements。

STEType 424 electric drive transmission，Helical gear structure with double intermediate shaft,High bearing capacity，Independent software development and calibration，Intelligent real-time identification of slope and vehicle weight，Achieve high traction of the whole machine，High speed，Low power consumption，Able to meet the requirements of new energy mixer、Dump truck、Requirements for main engine such as tractor。

TZ230 dual motor，Based on 800VDevelopment of Oil Cooling Technology for High Voltage Platform and Flat Wire，Dual-motor integrated design，High power density and reliability，The weight of the whole machine is small，Effective power density up to 5.8kW/kg。

Activity site，SY35UMicro-digging and interaction with the audience，The game of scooping a ball through the water.，It brilliantly demonstrates the control convenience and sensitivity of Sany Micro Dig.，It has won unanimous praise from experts, scholars and industry workers present.。

Since the establishment of Sany Group,，Always uphold“Create a first-class enterprise，Bring up first-class talents，Make a first-class contribution”The vision of the enterprise，Committed to extreme performance、Extreme cost、Customers like it、Proud star product，To provide customers with excellent products and a full range of solutions，Strive to change the world image of Chinese products with high-quality products and services。Future，Sany will unswervingly implement the new three-oriented strategy，Develop new quality productive forces，Achieve continuous breakthroughs in science and technology。