山推SG19-G（国四）平地机具有以下优点：1. 强大的动力性能：搭载的发动机功率大，扭矩大，能够带动机械部件进行高效的工作。同时，动力传输系统采用优化设计，传动效率高，能够充分发挥发动机的动力输出。2. 系统稳定性高：通过多项技术的应用，使得整个系统运行更加稳定可靠。对于重要部件采用了抗疲劳设计，延长了使用寿命。3. 操控简单方便：采用人性化的操作界面设计，使得驾驶员能够轻松掌握各种操纵手段，提高了工作效率。4. 施工性能优越：SG19-G具有良好的平地作业性能，可以在不同的地形条件下进行平整工作。同时，具备较高的工作速度，工作效率高。5. 低排放环保：SG19-G符合国四排放标准，采用先进的排放控制技术，使得废气排放量大大减少，对环境污染较小。6. 维修保养简便：机械结构合理，各个部件的拆装方便。同时，山推拥有完善的售后服务体系，驾驶员在使用过程中能够得到及时的技术支持和维修保养服务。

Shantui SG19-G (National 4) motor grader has the following advantages:1. Strong power performance: the engine equipped with high power and high torque can drive the mechanical parts to work efficiently. At the same time, the power transmission system adopts optimized design with high transmission efficiency, which can give full play to the power output of the engine.2. High system stability: through the application of a number of technologies, it makes the whole system run more stable and reliable. The anti-fatigue design is adopted for the important parts, which prolongs the service life.3. Simple and convenient manipulation: the humanized operation interface design makes it easy for the driver to master all kinds of manipulation means, which improves the working efficiency.4. Superior performance in construction: the SG19-G has a good performance of grading, which allows it to carry out grading work in different terrain conditions. At the same time, it has high working speed and high efficiency.5. Low emission and environmental protection: SG19-G meets the National IV emission standard and adopts advanced emission control technology, which greatly reduces the emission of exhaust gases and is less polluting to the environment.6. Easy maintenance: the mechanical structure is reasonable, and it is easy to dismantle and install each component. At the same time, Shantui has a perfect after-sales service system, drivers can get timely technical support and maintenance services in the process of use.