山东临工L975H（国四）装载机的优点包括：1. 动力强劲：采用的潍柴WP6G175E331发动机，具有较高的功率输出，可提供强大的动力支持，应对各种工况。2. 燃油经济性好：搭载了电子控制高压喷射系统，燃油喷射更加精准，燃烧效率更高，从而降低了燃油消耗。3. 操控灵活：采用先进的液力传动系统，换挡平稳，操纵灵活，操作起来更加简单。4. 载重能力强：装有大容量的斗形状设计，有效提高了装载效率，可达到较高的装载能力。5. 设计合理：车身结构坚固，采用了优质的钢材制造，具有较高的强度和耐久性。6. 操控舒适：驾驶室宽敞舒适，设有高级空调系统和座椅调节功能，保证了操作员的舒适性和工作效率。7. 维护方便：采用了智能故障诊断系统，能够快速准确地定位故障点，提高了维护和保养的效率。

The advantages of Shandong Lingong L975H (National IV) loader include: 1. Strong power: Weichai WP6G175E331 engine is adopted, which has high power output and can provide strong power support to cope with all kinds of working conditions. 2. Good fuel economy: Equipped with an electronically controlled high-pressure injection system, the fuel injection is more accurate and the combustion efficiency is higher, which reduces fuel consumption. 3. Flexible operation: Adopting advanced hydraulic transmission system, the gearshift is smooth and the operation is more flexible. 4. Flexible: adopting advanced hydraulic transmission system, smooth gear shift, flexible maneuvering, and simpler operation.4. Strong loading capacity: equipped with large-capacity bucket shape design, which effectively improves the loading efficiency, and can achieve a high loading capacity.5. Reasonable design: the body structure is sturdy, and it is made of high-quality steel, which has high strength and durability.6. Comfortable operation: the cab is spacious and comfortable, with advanced air-conditioning system and seat adjustment function, which ensures the operator's comfort and work efficiency.7. Convenient Maintenance: It adopts intelligent fault diagnosis system, which can quickly and accurately locate the fault points, and improves the efficiency of maintenance and upkeep.