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

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

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Wooden seven-in-one logarithmic board multi-function computing magnetic fishing game children's digital cognitive educational toys

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

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

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

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63*45*15 circlip type slitting machine iron sheet brake pad DBG DBH air pressure disc brake friction plate

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Decompression Pinch Music Little Red Book Cat Claw Pinch Music Decompression Toy Pinch Music Decompression Toy Blind Bag Pinch Music

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Industrial clutch brake friction plate

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Electric hammer grease impact drill gear maintenance oil power tool lubricating grease friction resistance long life manufacturers

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Scientific experiment suit primary school children's handmade diy technology small production friction labor-saving Montessori education

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diy technology small production new homemade flute children's production science and education toys early education kindergarten science popularization

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

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Scientific experiment chemical material package baking soda citric acid sodium alginate calcium chloride effervescent tablets alum snow powder

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

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Science and technology small production primary school students diy handmade model scientific experiment material package hydraulic air rocket launcher

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

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117*83*19 Brake Friction Plate Brake Pad for Fiat Allis Loader

117*83*19 Brake Friction Plate Brake Pad for Fiat Allis Loader

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

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Everest Kaiyue 500X brake pad 500F 525X 525F disc brake leather ZF500GY ZF500 brake friction

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

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Hand spray butter lubricant bearing gear grease anti-high temperature mechanical hinge door lock abnormal sound deep lubrication

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[Ant Castle S12] Ant Workshop | Ecological Toy Science Test Teaching Tool Ant Nest Ant Nest House suit

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Plastic gear noise-canceling grease, anti-wear, high temperature resistance, friction resistance, strong adhesion, non-throwing oil manufacturers wholesale

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Friction power generation electric science experiment technology small production student handmade diy electrostatic material kindergarten teaching aids

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Electrostatic experiment diy friction electrification material package technology small production children's electrostatic demonstration steam classroom manual

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