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Yunai 490 Gearbox 37kw Engine Power Crawler Excavator. Yunnei 37kw Engine: Powered by Yunnei brand 490 engine with 37kw power output. Guli Gearbox System: Equipped with Guli 21 model gearbox featuring 3+1 gear stages. Customizable Color: Product color can be customized according to customer needs. Tie Rod Steering: Features tie rod steering mode for reliable maneuverability. Rubber Track System: Uses 350*90*56 rubber tracks for stable traction. Hydraulic Support Legs: Equipped with two hydraulic support legs for stability. 100% Quality Inspection: Strict quality control with 100% visual and function inspection. ISO9001 Certified: Company holds ISO9001:2015 management system certification.