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With rotating drill into the rock excitation device

With rotating drill into the rock excitation device

With auxiliary rotating drill top institutions triangle structure change

With auxiliary rotating drill top institutions triangle structure change

A rotating drill head

A rotating drill head

Walking hydraulic mechanical engine speed and the main pump with displacement

Walking hydraulic mechanical engine speed and the main pump with displacement

For mine hydraulic monorail crane truck driver of automatic release

For mine hydraulic monorail crane truck driver of automatic release

A mine monorail crane truck brake buffer device

A mine monorail crane truck brake buffer device

A new type of variable rotating drill triangle

A new type of variable rotating drill triangle

Rotating drill motor speed control device

Rotating drill motor speed control device

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