The two categories are not closely related. Category 7 is mainly about various machinery and machinery accessories, and Category 12 is about vehicles and vehicle accessories. Among them, the seventh category of bearings and engines and the twelfth category of automobile bearings and auto parts will have similar correlations, and the others have no relationship.
Class 7
Machines and machine tools; motors and engines (except for land vehicles); machine couplings and transmission parts (except for land vehicles); non-manual agriculture Appliances; incubators; vending machines.
Group 0701 Agricultural machinery and parts (excluding small agricultural tools
Group 0702 Machinery and equipment for fishery and animal husbandry
Group 0703 Logging, sawing, timber Processing and match production
0704 Group Machinery and Appliances for Paper Making and Processing Paper Products Industry
0705 Group Machinery and Appliances for Printing Industry
0706 Group Fiber Processing and Machinery for the textile and knitting industry
0707 Machinery for the printing and dyeing industry
0708 Machinery for the tea industry
0709 Machinery and components for the food industry
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0710 Group Machinery for Brewing and Beverage Industry
0711 Group Machinery for Tobacco Industry
0712 Group Machinery for Leather Industry
0713 Group Sewing, Shoemaking industrial machinery
0714 Group Bicycle industrial equipment
0715 Ceramic, brick and tile manufacturing machinery
0716 Engraving machine
0717 Assembling battery machinery
0718 Assembling daily sundries processing machinery
0719 Assembling enamel machinery
0720 Assembling light bulb machinery
0721 Group Packaging Machinery (excluding special packages for complete sets of equipment
0722 Group Coal Processing Machinery for Civil Use
0723 Group Kitchen Household Appliances (excluding cooking and electrical appliances
0724 Group Washing Machine
0725 Group Machinery and Components for Pharmaceutical Industry
0726 Group Rubber and Plastic Industrial Machinery
0727 Group Machinery for Glass Industry
Group 0728 Fertilizer equipment
Group 0729 Machinery for other chemical industries
Group 0730 Machinery for geological exploration, mining and mineral processing
Group 0731 Machinery for smelting industry Equipment
0732 Group Equipment for Petroleum Extraction and Refining Industry
0733 Group Machinery for Construction, Railway and Civil Engineering
0734 Group Lifting and Transport Machinery
Group 0735 Forging Equipment
Group 0736 Casting Machinery
Group 0737 Steam Power Equipment
Group 0738 Internal Combustion Power Equipment
0739 Group of wind and hydraulic power equipment
0740 Group of pin and nail making machinery for office use
0741 Group of button and zipper making machinery
0742 Group of metal cutting machine tools, cutting Tools and others
0743 Group of hand tools for non-manual operation
0744 Group of electrostatic and electronic industrial equipment
0745 Group of optical industrial equipment
Group 0746 Gas separation equipment
Group 0747 Group painting equipment
Group 0748 Group generators, motors and engines for non-land vehicles
Group 0749 Group pumps, valves , gas compressors, fans, hydraulics
Group 0750 Couplings for machine transmission, transmission belts and others
Group 0751 Group welding machinery
Group 0752 Cleaning, waste Processing machinery
Group 0753 Single Goods
Group 0754 Electroplating Equipment
Category 12
Vehicles; land, air and sea Use a carrier.
Group 1201 Trains and parts thereof
Group 1202 Motor vehicles, trams, motorcycles and parts thereof (excluding tires)
Group 1203 Motorcycles and other parts Parts and components (excluding tires)
1204 Set of bicycles, tricycles and their parts and components (excluding tires)
1205 Set of cable cars, overhead transportation equipment
1206 Group wheelchairs, trolleys, strollers
1207 Group animal-drawn vehicles
1208 Group tires and tire repair tools
1209 Group air transport vehicles (excluding aircraft Tires)
1210 Set of Water Vehicles
1211 Set of Vehicle Parts