利勃海尔LRT1090-2.1起重机具有以下优点：1. 强大的起重能(néng)力：LRT1090-2.1起重机具有90吨的最大起重能(néng)力，能(néng)够轻松应对各种(zhǒng)起重任务。2. 高效的工作性(xìng)能(néng)：该起重机采用了先进的液压系统和起重技术，能(néng)够快速、准确地完成各种(zhǒng)起重操作。3. 灵活的移动性(xìng)能(néng)：LRT1090-2.1起重机配(pèi)备了全地形四轮驱动系统和四轮转向系统，能(néng)够在不同地形和狭窄空间中灵活移动，提升工作效率。4. 安全可靠：该起重机配(pèi)备了多项安全保(bǎo)护装置，如超载保(bǎo)护系统、倾覆保(bǎo)护系统等，能(néng)够确保(bǎo)起重过程中的安全性(xìng)。5. 操作简便：LRT1090-2.1起重机配(pèi)备了人性(xìng)化的操作界面和智(zhì)能(néng)化控制系统，操作简便易懂，降低了操作难度和风险。6. 节能(néng)环保(bǎo)：该起重机采用了节能(néng)技术和排放控制技术，能(néng)够降低能(néng)耗和环境污染，符合绿色可持续发展的要求。总的来说，利勃海尔LRT1090-2.1起重机具有强大的起重能(néng)力、高效的工作性(xìng)能(néng)、灵活的移动性(xìng)能(néng)、安全可靠的特点，是一款高性(xìng)能(néng)的起重机。

Liebherr LRT1090-2.1 crane has the following advantages:1. Powerful lifting capacity: LRT1090-2.1 crane has a maximum lifting capacity of 90 tons, which can easily cope with a variety of lifting tasks.2. Efficient working performance: The crane adopts advanced hydraulic system and lifting technology, which can quickly and accurately complete a variety of lifting operations.3. Flexible movement Performance: LRT1090-2.1 crane is equipped with all-terrain four-wheel drive system and four-wheel steering system, which is able to move flexibly in different terrains and narrow spaces, and improve the working efficiency.4. Safe and reliable: The crane is equipped with a number of safety protection devices, such as overload protection system, tipping protection system and so on, which ensures the safety of the lifting process.5. Easy operation: LRT1090-2.1 crane is equipped with user-friendly hydraulic system and lifting technology. 2.1 crane is equipped with humanized operator interface and intelligent control system, easy to understand the operation, reducing the difficulty and risk of operation. 6. energy saving and environmental protection: the crane adopts energy-saving technology and emission control technology, which can reduce energy consumption and environmental pollution, in line with the requirements of green and sustainable development. Overall, Liebherr LRT1090-2.1 crane is characterized by powerful lifting capacity, efficient working performance, flexible mobility, safety and reliability.