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中聯重科ZR400C-3K旋挖鉆有以下優點：1. 高效：采用了全新的液壓系統和動力傳動系統，提高了工作效率。最大鉆孔直徑為1.8米，最大鉆孔深度達到59米，可以滿足不同施工需求。2. 穩定性好：采用了全新的升級型液壓回轉底盤，提高了整機的穩定性和平衡性。同時配備了強勁的動力系統，能夠適應不同地質條件下的施工需求。3. 操作簡便：采用人性化的設計，操作界面簡單易懂，操作方便。配備了自動超負荷保護和自動調速控制系統，確保施工安全和穩定性。4. 全方位施工能力：配備了多種施工工具，如巖土鉆具、土鉆具以及筒倉鉆具等，能夠適應多種不同的施工需求。5. 維護方便：采用了簡單和易于維護的結構設計，降低了維護成本和維修時間。6. 節能環保：采用了先進的動力系統和液壓系統，能夠降低能源消耗和碳排放，符合環保要求。7. 可靠性高：采用了優質的材料和工藝，保證了整機的可靠性和耐用性。同時配備了完善的售后服務系統，能夠及時解決用戶的問題。

Zoomlion ZR400C-3K rotary drill has the following advantages: 1. High efficiency: it adopts a brand new hydraulic system and power transmission system, which improves the working efficiency. The maximum drilling diameter is 1.8 meters, and the maximum drilling depth reaches 59 meters, which can meet different construction requirements.2. Good stability: It adopts a new upgraded hydraulic rotary chassis, which improves the stability and balance of the whole machine. Meanwhile, it is equipped with strong power system, which can adapt to the construction needs under different geological conditions. 3. Easy operation: it adopts humanized design, with simple and easy-to-understand operation interface and convenient operation. Equipped with automatic overload protection and automatic speed control system to ensure construction safety and stability. 4. All-round construction ability: Equipped with a variety of construction tools, such as geotechnical drilling tools, soil drilling tools and silo drilling tools, which can adapt to a variety of different construction needs. 5. Convenient maintenance: Adopting a simple and easy-to-maintain structural design, which can reduce the maintenance cost and repair time. 6. Energy-saving and environment-friendly: Adopting advanced power system and hydraulic system, which can adapt to different construction needs under different geological conditions. 7. The adoption of advanced power system and hydraulic system can reduce energy consumption and carbon emission, in line with the requirements of environmental protection. 7. High reliability: the use of high-quality materials and processes to ensure the reliability and durability of the whole machine. Meanwhile, it is equipped with perfect after-sales service system, which can solve the user's problems in time.