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

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

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

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

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Students 99 Multiplication Table Table Table Game Exercise Mind Mathematical Calculation Teaching Ads Parent-Child Interactive Educational Science and Education Toys

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

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

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Science and technology small production STEM education maker handmade scientific experiment teaching aids diy assembly material package kit wholesale

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

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

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

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

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

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

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

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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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Scientific and Technological small production causes of DIY style experimental materials students' scientific and physical equipment teaching aids

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Pupil Experimental Pigment 10ml Children's Science Experimental Color Hand Tone Slime Pigment DIY Material

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

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Science and technology small production DIY assembly taxiing aircraft material package primary and secondary school students scientific experiment model a generation of hair

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

Original Price: $5 Sale Price: $5