主要经营的是潍柴整机及配件，以及柴油机的维修保养。
Weichai mainly engaged in the machine and its accessories, as well as diesel engine repair and maintenance.
由于机械的使用、磨损以及维修保养不当等原因，致使小型柴油机技术状态变差、耗油率增高。
As machine's use, wearing and keeping in repair are not suitable, they are poor in technique state and oil consumption.
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