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

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Machine tool press punch friction plate round friction block brake block punch accessories

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Living Stone Globe AR Birthday Gift for Primary School Students Opening School Girls Boys Intelligent Educational Toy Ornaments

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

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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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Electromagnetic brake friction plate motor brake disc brake pad Mechanical accessories

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

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Scientific Experiment diy Friction Electrogeneration Material Package Electrostatic Demonstration Technology Small Production Student Children Handmade

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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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Scientific experiment diy climbing monkey physical friction technology small production student children handmade school material package

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Air pressure disc DBS DBK brake friction plate multi-point round RE old paper cutter brake pad

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Science and Technology small production diy small invention boy hand-made mechanical password box science and technology innovation scientific experiment

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Cross-border wooden children's educational early teaching aids analog electronic switching power supply LED light busy board busy light toys

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Free Shipping Creative Crown Rodent Pioneer Handbag Decompression Bag Silicone Toy Pioneer Messenger Bag Amazon

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Science and technology small production of eight planets Solar System eight planets model universe model celestial instrument

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Xueyouma Portable Microscope Upgrade 3-in -1 Set Dual Light Source Experiment Microscopic Slide Specimen Toy

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Tiktok new radish telescope 8 Times single tube 3-section telescopic adjustable focus children's educational science and education boys and girls toys

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Children's Garbage Sorting Game Brainstorming Battle Early Childhood Education for Boys and Girls Desktop Trash Bin Kindergarten Teaching Aids

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Self-made slide projector student science and technology small production DIY handmade maker science experiment model equipment teaching aids

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Magic water elf water baby children's pearlescent solution toy suit diy handmade material toy

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Friction starting science experimental materials science and technology small production children's stem maker education and training equipment

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Creative Technology Small Production Friction Experiment Brain Tiangong Primary School Kindergarten Science Experiment Toys Free Shipping

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Hand spray butter lubricating grease high temperature resistant door lock cylinder door hinge bearing gear abnormal noise anti-rust spray

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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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New DIY Swing Pendulum Magnetic Pendulum Handmade Small Making Children's Small Invention Science and Technology Creative Science Experiment for Primary School Students

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Science and technology small production DIY blowing bubble machine children Primary School students science experiment manual assembly teaching supplies materials

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

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