【正文】 and technology of preparing improved silicone sealants and manufacturing of relevant production equipment14. Design and manufacturing of highprecision strip mills (thickness precision of 10 microns)15. Manufacturing of ore dressing equipment for multielement, fineparticle and refractory metal minerals16. Manufacturing of the key equipment of plete sets of ethylene equipment with an annual capacity of 1 million tons or more: mixing granulators with an annual processing capacity of 400,000 tons or more, helicalconveyer centrifuges with a diameter of 1,000 mm or more, and lowflow highhead centrifugal pump17. Manufacturing of plete sets of large coal chemical equipment (limited to Chineseforeign equity or contractual joint ventures)18. Design and manufacturing of metal product molds (extrusion dies for pipes, rods and section bars made of copper, aluminum,。 and measurementwhiledrilling (MWD) tools3. Manufacturing of equipment for oil exploration, drilling, collection and transportation: floating drilling systems and floating production systems with an operating water depth of more than 1,500 meters and the supporting subsea oil extraction, collection and transportation equipment4. Manufacturing of largecaliber rotary drilling rigs with a caliber of 2 meters or more and depth of 30 meters or more, push benches with a diameter of meters or more, plete sets of large equipment with a pullback force of 300 tons or more for laying underground pipes and lines without digging, and underground diaphragm wall construction drilling rigs5. Design and manufacturing of large bulldozers of 520 horsepower or more6. Design and manufacturing of silt removers with a capacity of 100 cubic meters or more per hour and dredging devices for dredgers with a capacity of 1,000 tons or more7. Design and manufacturing of equipment for the construction of concrete cutoff walls used for flood prevention dikes8. Manufacturing of underwater earthwork construction machinery: bulldozers, loaders, excavators, etc. operating nine meters underwater or deeper9. Manufacturing of equipment for maintenance and automatic testing of highways and bridges10. Manufacturing of equipment for operational monitoring, ventilation, disaster prevention and rescue systems of highway tunnels11. Design and manufacturing of maintenance machinery and inspection and monitoring equipment for largescale railway construction, railway tracks, bridges and tunnels and their key parts and ponents12. Manufacturing of equipment for (asphaltic) linoleum tiles and equipment for producing galvanized steel sheets and other metal roofs13. Manufacturing of equipment for environmentfriendly and energysaving onsite polyurethane spraying waterproof and thermal insulation systems。 digital imaging systems and digitally controlled well logging systems。 and electricallydragged coal mining machines of 2,500 kilowatt or more2. Manufacturing of equipment for geophysical exploration and well logging: MEME seismometers。 bucket wheel excavators with a capacity of 5,000 cubic meters or more per hour。 22. Remanufacturing of machinery such as machine tools, engineering machinery and railroad engine equipment and remanufacturing of automobile parts and ponents(XVIII) SpecialPurpose Equipment Manufacturing1. Manufacturing of trackless equipment for excavation, loading and transport in mines, including but not limited to: mechanicallydriven tippers for mining with a capacity of 200 tons or more。 bearings of wind turbine generator set (mainshaft bearing, speed increaser bearing, dynamo bearing, etc. of a wind turbine generator set of 2 megawatts or more)。 lownoise bearings with vibration below Z4 (noise level: Z4, Z4P, V4, or V4P)。 highspeed wire rod or plate rolling mill bearings (support bearings and work roll bearings for singleline wire rod mills with a speed of 120m/s or more or for thinplate rolling mill processing plates with a thickness of 2mm or more)。 and deeply processed tungsten and molybdenum products(XVI) Metal Products1. Research, development and manufacturing of new types of lightweight and environmentfriendly materials for aviation, aerospace, automobiles and motorcycles (including but not limited to specialpurpose aluminum sheets, aluminummagnesium alloy materials, and aluminum alloy motorcycle frames)2. Development and production of construction hardware and hotwater heating equipment and hardware3. Manufacturing and processing (including painting and processing inner and outer surface of products) of metal packing products (thickness ) used for packing various kinds of grain, oil, food, vegetables, fruits, beverages, and household chemicals4. Manufacturing of nickelsaving stainless steel products(XVII) General Equipment Manufacturing1. Manufacturing of highend puterized numerical controlled (CNC) machine tools and key spare parts: fiveaxis alignment CNC machine tools, CNC coordinate boring and milling processing center, CNC coordinate grinding machines, fiveaxis alignment CNC system and servomechanism installations, and highspeed ultrahard cutting tools used for precision CNC processing2. Manufacturing of multistation forging forming machines of 1,000 tons or above3. Manufacturing of equipment for dismantling, crushing, and postprocessing and sorting of retired automobiles4. Manufacturing of flexible transfer lines (FTL)5. Manufacturing of vertical multijoint industrial robots and welding robots and relevant welding devices and equipment6. Manufacturing of special processing machines: plete sets of equipment for laser cutting and welding, laser precision processing equipment, CNC lowspeed wirecut electrical discharge machines (LSWEDMs), and submicron and ultrafine grinders7. Manufacturing of wheeled or crawler cranes of 400 tons or above (limited to Chineseforeign equity or contractual joint ventures)8. Design and manufacturing of highpressure plun