柳工855N国四装载机的优点包括：1. 强大的动力性能：搭载国四排放标准的发动机，动力更强劲，提供更高的工作效率和作业能力。2. 高效节能：采用先进的液压系统和动力匹配技术，能够实现更精确、更高效的动力分配，有效节约能源。3. 操控灵活：采用新一代的操纵系统，操作更简便，灵活度更高，能够提供更好的操作体验和精准的操控性能。4. 人性化设计：驾驶室内部设计优良，舒适度高，并且配备了先进的人机工程学座椅和多功能仪表盘，提供更好的用户体验。5. 安全可靠：装备了先进的安全保护系统，如防滚翻装置、全封闭风机散热系统等，能够保障操作员的安全，并且具备良好的可靠性和耐久性。6. 多功能性：可适应各种复杂的工况环境和作业场合，具备多种功能，如铲土、挖掘、装卸等，提供更广泛的应用范围和作业能力。总体来说，柳工855N国四装载机具有强大的动力性能、高效节能、操控灵活、人性化设计、安全可靠以及多功能性等优点，是一款性能优越的装载机产品。

The advantages of LiuGong 855N National IV loader include: 1. Powerful power performance: equipped with National IV emission standard engine, the power is more powerful, providing higher efficiency and working capacity. 2. Energy efficient: using advanced hydraulic system and power matching technology, it can realize more accurate and efficient power distribution, effectively saving energy. 3. Flexible control: adopting new generation of manipulation system, it is easier to operate and more flexible, providing better operating experience and precise control performance. 4. Humanized design: the cab interior design is excellent and comfortable, and equipped with advanced ergonomic seats and multi-function instrument panel. Humanized design: The cab has excellent internal design, high comfort, and is equipped with advanced ergonomic seats and multifunctional instrument panel, providing better user experience. 5. Safe and reliable: Equipped with advanced safety protection systems, such as anti-roll-over device, fully enclosed fan cooling system, etc., which can guarantee the safety of the operator and have good reliability. 6. It is equipped with advanced safety protection systems, such as anti-roll-over device, fully enclosed fan cooling system, etc., which can guarantee the operator's safety, and has good reliability and durability.6. Versatility: It can be adapted to a variety of complex working environments and operating occasions, and is equipped with a variety of functions, such as shoveling, digging, loading and unloading, etc., which provides a wider range of applications and operating capabilities. Overall, LiuGong 855N National 4 loader has the advantages of strong power performance, high efficiency and energy saving, flexible handling, humanized design, safety and reliability as well as multifunctionality.