Specifications:

Hand-cranked generator

Four-wheel drive racing car

Solar car

Twin-engine taxiing aircraft

Jeep

Wind Valley Machine

Beili Bridge

Rope Climbing Little Man

Balanced Birds

Three-ball instrument (manual)

Creative manipulator

Circuit series parallel

Telescope

Rubber Band Guitar

Graffiti robot

Responder

Magnetic trolley

Magnetic levitation

Conduit Level

Newton Pendulum

Equatorial sundial

The Stone car

Balancing robot

Gravity Car

The roller will go home

Astrological lamp

Hydraulic Excavator

Traffic light

Small tanks.

Telegraph

Ball seesaw

Tensile structure

Duchamp turntable

Taxi the airplane

Vacuum cleaner (Wood)

Hand-cranked music box

Solar fan

Laser infrared alarm

Small train

Walking robot

Carousel

Automatic serving machine

Solar Helicopter

Colorful small table lamp

Sweeping robot

Satellite model

Intelligent light control desk lamp

Medium color box 25*32

Small electric fan

Magnetic seesaw

Jumping Frog

Suspended permanent pen

Basket Shooter

Homemade Clocks

Piano Music Box

Generator capacity conversion

Squirrel Power Generation

Wind power generation

Colorful power generation House

Electric tricycle

Pulling trolley

Terracotta Fighting Vehicle

Remote control four-wheel drive Racing

Wireless remote control car

Recoil car

Solar Lunar Rover

Fighter

Gear shuttle

Shenniu gear car

Mechanical woodpecker

Chicken pecking Rice

Colorful table lamp

Colorful optical fiber lamp

Peacock Open Screen

Homemade compass

Cable-stayed bridge

Colorful Music Rack

Pai Xiao

Money Detector

Electric roller

Acousto-Optoelectronics

Hydraulic manipulator

Hydraulic Shark

Hydraulic lifting table

Wireless Telegraph

Spider Bionic Robot

Like the robot.

Running robot

Balance Scale

Robot Tyrannosaurus Rex

Brachiosaurus

Elevator Lift

Rubber Band Pistol

National Flag Platform

Double-track Strange Slope

Electric air suspension ball

Three-ball instrument (automatic)

Hand Crane

Bionic peristaltic snail

Threshing machine

Caged Bird

Baibao Password Box

Wind meter

Wind Vane

Clown walking on a tightrope

Clown color change

Rotating Swing

Small swing

Tumbler

Addition and subtraction exerciser

Crazy Brush

Pinhole imaging

Lilly simple pendulum

Periscope

Submarine

Electric Tank

Remote control tank

Digital integrator

Gear transmission

Air Purifier

Human skeleton

Human digestive system

Water dispenser

Conductor detection

Connector

Big Dipper

Oil field pumping unit

Gecko Robot

Track 88

Crossing the Fire Line

Amphibious vehicle

Ferris wheel

Spinning Machine

Stethoscope

Maudeburg Hemisphere

Tadpoles grow up

Remote control wind ship

Shock Absorber

Hyperbolic model

Geometric Enlightenment board

Become bigger and smaller

Garbage classification

Steel Ball Maze

Vibration sensor

Magnifying glass

Single set of Kaleidoscope

Suspension blowing ball

Magic Butterfly

Tiger aircraft

Little Thunderbird Plane

Plastic frame 3D glasses

Paper frame 3D glasses

Wheels well

Electric shaking head fan

Homemade Flashlight

Wind Power Station

Phantom speed

Balloon plane

Air Cannon

Colorful star lamp

Perpetual Calendar A

Bionic Flying Bird

Electric heating cutter

Battery Iron Experiment

Rubber band power car

DC motor

Four-wheel drive trolley

Ming Steamship

Electric Whirlpool

Solar Double Ring

Dryer

Water wheel

The gravitational pull of the Earth and the moon

Electric Snow

Wind boat

Homemade slide projector

Sail car

3D holographic projection

Bionic reptile robot

Color Master (Color Relay)

Rain alarm

Movable type printing

Electric bionic butterfly

Electric gate

Solar Windmill House

The Escape Hedgehog

Aircraft carrier aircraft catapult

Dust car

Open door worm

The magic window.

Rocket model

Walking Lantern

Magic Piggy Bank

Blood circulation

Dynamometer

Homemade Thermometer

No Word Book of Heaven

Lunar phase origin

Gear triple linkage

Friction electrifier

Perpetual Calendar paragraph B

The pencil will generate electricity

Fire extinguisher

Friction experiment

Salt water electric fan

Robot pull cart

Hydraulic loader

Hand bubble machine

Balanced Dragonfly 248

Shake head fan 237

Paper Human Skeleton 238#

The spinning windmill 239#

cable fan 240#

Magic Blow Balloon 241#

Ha ha mirror 242#

Insect Movement 243#

Homemade magnifying glass 244#

Homemade Telescope 245#

Variable magnet small tree 246#

Absorbent candle 247#

Balanced Dragonfly 248#

Magic Christmas Tree 249#

Three primary colors 250#

Rainbow Ferris Wheel 251#

Food Chain 252#

Paper Periscope 253#

Simple Air Cannon 254#

Earth Phone 255#

The tumbling capsule 256#

Simple Paddle Steamer 257#

Volcanic Eruption 258#

Seed germination 259#

paper slide projector

Crab robot

Dragon boat wind car

hovercraft

siege crossbow

magnetic aircraft

Shoot the stone gun