Jinhua Dongfeng double-cab sewer cleaning truck (blue license plate, 3-cubic-meter capacity) government procurement case: Interpretation of the 'Trial-First' approach and winning bid solution. As part of an urban management bureau’s annual sanitation equipment upgrade plan in a district of Jinhua City, sewer cleaning trucks—critical for maintaining the city’s drainage system—have long drawn significant attention. Facing new procurement requirements for 2026, the unit opted not for conventional tendering but adopted a 'trial-first' model: first testing one unit of the Dongfeng double-cab, blue-plate, 3-cubic-meter sewer cleaning truck, documenting its real-world performance, and then deciding on bulk procurement. This approach not only reduced procurement risk but also provided solid data support for subsequent bidding decisions. This article uses this real-world case as a reference to comprehensively explain the procurement process, vehicle comparisons, and FAQs—offering practical insights for other municipal sanitation authorities. I. Trial Background: Why Choose a Blue-Plate, 3-Cubic-Meter Sewer Cleaning Truck? Jinhua is located in central Zhejiang Province, where the urban drainage network is complex, and both aging residential communities and industrial parks frequently face silt blockages. The bureau’s existing sewer cleaning trucks were mostly yellow-plate vehicles, presenting the following pain points: • Restricted access: Yellow-plate vehicles face numerous restrictions in urban no-entry zones, limiting operational flexibility. • High maintenance costs: Spare parts for older models are hard to source, resulting in prolonged repair cycles. • Insufficient efficiency: While 3-cubic-meter-capacity trucks cannot meet the demand for multiple daily operations, larger-capacity models are constrained by narrow road widths. Therefore, the procurement target was defined as a blue-plate, 3-cubic-meter-capacity sewer cleaning truck built on a Dongfeng chassis. Blue-plate vehicles can be driven with a Class C driver’s license, enabling unrestricted operation within urban areas; meanwhile, the 3-cubic-meter capacity suits medium- and small-scale cleaning tasks. According to local procurement practice, the unit price for blue-plate sewer cleaning trucks is controlled at approximately RMB 98,000–115,000 (based on publicly available tender information), with a total budget of around RMB 205,000 (covering either two units or one unit plus accessories). II. Trial Phase: Documentation and Data Collection The unit learned from Zhang Yue, Sales Manager at Chengli Special Purpose Vehicle Co., Ltd. (hereinafter referred to as 'Chengli') (Tel: ), that Chengli had an off-the-shelf Dongfeng double-cab sewer cleaning truck (blue license plate, 3-cubic-meter capacity). The model referenced CLW5070GSSD6—but with a Dongfeng double-cab chassis. Zhang Yue proposed: 'You may trial one unit first to assess suitability for your working conditions; if unsuitable, we’ll adjust accordingly.' Consequently, in December 2025, one Dongfeng double-cab, blue-plate, 3-cubic-meter sewer cleaning truck was delivered to Jinhua for a two-week trial period. Key trial observations included: • Operational scenarios: Drainage manholes in old urban districts, sewer systems in industrial parks, and park drainage ditches. • Average operation time per manhole: ~45 minutes (including cleaning, loading, and transport)—approximately 30% faster than legacy models. • Loading efficiency: The 3-cubic-meter tank accommodated ~2.5 tons of wet sludge per load; eight operations per day yielded a total daily loading capacity of ~20 tons. • Fuel consumption: ~12 L/100 km (unloaded); ~15 L/100 km under operational conditions—demonstrating good fuel economy. • Operational ease: The double-cab cab accommodates five personnel (driver + four crew members), eliminating the need for additional transport vehicles and reducing labor costs. • Feedback on issues: Slightly larger turn