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Sweeping robot creative vacuum cleaner science experiment student science and technology small production small invention handmade material package

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Cross-border rat killer pioneer POP Christmas children's mental calculation large Press educational toy silicone decompression bubble music

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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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Industrial clutch brake friction plate

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Self-made dynamometer student spring scale technology small production tension device children's science small experiment material package teaching aids

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

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Magic Water Elf Science Laboratory Magic Water Baby Summer Water Play Children's Toy Heart Caragana Chenyue Senmu

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

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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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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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10ml children science experiment pigment water soluble pigment Plasticine slime diy handmade soap colorant

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Technology small production creative small invention DIY bear climbing rope physical experiment friction steam elementary school student toy

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Laser targeting device technology small production diy manual assembly model scientific teaching aids experimental device material package

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

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Scientific experiment diy bear climbing rope friction experiment steam technology small production small invention material package suit

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Montessori Math Teaching Aids Black and White Grey Bead Box Color Bead Box Storage Bead Box Digital Computing Educational Toys

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Tree Climbing Panda Friction Rope Climbing Experiment Primary School Students' Science and Technology Small Production Children's Science Small Experiment Material Package

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Science Experiment Solar Fan Children's Handmade Equipment Material Package Science and Technology Small Making Small Invention Science and Education Frontier

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

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

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

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Student Science experiment homemade time hourglass diy technology small production material package children's handmade invention steam

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Children's Water Garden diy chemistry Primary School students silicate sodium growth Stone Magic Stone science experiment toy

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Cross-border Hot-selling Children's Science and Education Cognitive Toys Human Organ Structure Model Assembled Matching Medical Early Education Men and Women

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