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Cross-border hot selling DIY assembled toys 13 in one self-installed solar toy car 13 in 1 intelligent robot

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Friction and Electricity Science Experiment Technology Small Production Student Handmade diy Electrostatic Materials Kindergarten Teaching Aids

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800g keg general grease excavator loader butter construction machinery friction parts lubrication anti-rust

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diy kindergarten Elementary School students' science and education toys scientific small production friction generation electric electrostatic experiment handmade materials

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Climbing monkey friction experiment diy technology small production material package kindergarten popular science hand-assembled educational toys

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Wholesale White Special Grease Mechanical Bearings Reduce Friction High Temperature Lubricant Metal Curing Lubrication

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Self-made Submarine Technology Small Handmade Scientific Experimental Equipment Ups and Downs Diving diy Teaching Aids Materials Toys

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Industrial clutch brake friction plate

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Ailunbao plastic gear silencer grease anti-wear, high temperature resistance, friction resistance, strong adhesion and no oil rejection

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Science and technology small production DIY colorful full-color light circuit experimental toys electromagnetic induction science small experimental material package

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Manufacturers supply punch mechanical friction block buffer layer press friction block high wear-resistant friction block production

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Shake the sound of the same garbage sorting educational card toys Shanghai trash can Mini props children's learning aids

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One-piece air-powered car scientific experiment toy STEAM small production maker training DIY material

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80*60*15 square 4-hole brake pad slitting machine rewinder brake friction plate

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Polymer wear-resistant friction plate hexagon clutch brake pad motor brake accessories

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Electromagnetic brake friction plate motor brake disc brake pad Mechanical accessories

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5G 10 waterproof sealed silicone grease faucet toy water gun cylinder O-ring silicone grease paste small package lubricating grease

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Simulation traffic light toy live voice broadcast traffic lights little boy early education sound and light toy ornaments

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Super high temperature resistant grease high speed bearing mechanical wear-resistant Butter automobile industrial gear electric hammer factory wholesale

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Frictional electrification science experiment diy technology small production electrostatic demonstration material package steam classroom manual

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Fun diy handmade potato fruit power generation scientific experiment material package technology small production steam teaching aid wholesale

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DIY Wind Vane Self-made Wind Meter Small Production DIY Science and Technology Science Experiment Hand-assembled Student Teaching Aids New Products

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Science experiment teaching aids for primary school students self-made water purifier filter water science and technology small production Steam science and education frontier

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Air pressure disc brake friction plate for printing machine paper cutter industrial machinery air pressure disc brake pad

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Homemade amphibious vehicle Wind boat technology small production materials small invention handmade technology waste utilization

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Science and Technology Small Production DIY Creative Teaching Science Experiment Student Small Invention Electric Jeep Off-road Vehicle Material Package

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Science and technology small production homemade Periscope optical physics science experiment DIY assembled Periscope intelligence toys

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Science and technology small production pole woodpecker science experiment package 7-14 years old primary school students friction physics experiment toy

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