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person:("guan feng")
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person:("yuan peng")
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person:("yuan feng")
Passenger vehicle with weldless or weld stress eliminable safety structure
Rear protective fence mud blocking device for vehicle
Automatic tire pressure control method and device and inflation/exhaust pump
Paving box and asphalt mixture heat preservation transport vehicle
Insulating movable sitting ladder for overhauling high-voltage switch cabinet
Self-cleaning wheel washing device for engineering machinery
Protection method and system for grabbing beam of hoisting equipment and crane