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DIY Hydraulic Excavator Model Puzzle Toys


DIY Channel Hydraulic Excavator

Material: wood Suitable age: over 8 years old


1.Dinosaur batteries need to be purchased by yourself. 2. English instructions for hydraulic excavator


Hydraulic transmission is a transmission mode which uses pressurized liquid in closed system to transfer motion and power. It converts the mechanical energy into the pressure energy of the liquid, and then the pressure energy of the liquid into the mechanical energy.