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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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Manufacturers supply punch mechanical friction block buffer layer press friction block high wear-resistant friction block production

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

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

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

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

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

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

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Industrial clutch brake friction plate

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

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

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

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

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

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

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

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Volcanic eruption first grade science experiment children's creative handmade small production volcanic mold shell science and education toys

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Scientific Experiment Obstacle Avoidance Car Robot Science and Technology Small Production Primary School Students DIY Manual Intelligent Experiment Small Invention

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[Star River] cable-stayed bridge diy technology small production mechanics physics experiment school education training material package

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

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Crowdstone Technology Small Making Small Invention Children's Handmade Scientific Experiment Educational Toy Model Stone-throwing Chariot

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Science and Technology small production GUI watch Japanese shadow length measurement 24 solar terms astronomical instrument handmade DIY children's teaching aids

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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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