Patent for utility models of GJ1103A hand throttle control lever      Patent for utility models of GJ1109A duplex remote valve control lever

Patent for utility models of GJ1109 remote valve control lever         Patent for utility models of GJ1130 road roller throttle control lever

Design patent certification of GJ1130 road roller throttle control lever      Patent for utility models of GJ1131 truck shift control

Design patent certification of GJ1131 truck shift control              Patent for utility models of GJ1101 construction machinery control lever assembly

Design patent certification of GJ1101 construction machinery control lever assembly    Patent for utility models of mandrel of flexible shaft