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DIY creative technology small production electric windmill house elementary school students educational science and education toys handmade work material package

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

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

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

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

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

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

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Science and technology small production diy material package small invention hand-made dehydrator dryer elementary school students scientific experiment

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

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diy handmade technology small production creative vacuum cleaner student scientific experiment invention handmade assembled teaching aids materials

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

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

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Gear motor accessories 32mmX32mmX100mm billion large motor brake pad tool magazine motor friction plate

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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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10ml children's scientific experiment food coloring diy handmade rubber color slime Crystal mud color pigment

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Pupils' Color Wooden Counting Stick Teaching Aids 100 8cm Bamboo Counting Stick Math Stick Children's Educational Toys

Pupils' Color Wooden Counting Stick Teaching Aids 100 8cm Bamboo Counting Stick Math Stick Children's Educational Toys

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[Star River] Cutter Electric Energy Conversion Thermal Energy Physics Science Experimental Equipment Foam Cutting with Scale

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8cm bamboo Primary School students color counting stick 100 children's toys arithmetic stick counting stick math stick learning tool

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

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Industrial clutch brake friction plate

Industrial clutch brake friction plate

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

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Bamboo people sixth grade handmade toy material diy small bamboo people double battle position Zhiyi game with pk table

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

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

Original Price: $5 Sale Price: $5