First-time procurement from scratch: An environmental protection initiative by a municipal sanitation department. In early 2025, a district-level municipal sanitation department in Changde City, Hunan Province (hereinafter referred to as 'the unit') had just completed a new round of organizational restructuring. The newly established Sanitation Division faced an urgent task: aging sewage treatment facilities across multiple towns under its jurisdiction required an efficient, mobile sewage treatment unit to meet emergency handling needs ahead of the rainy season. This marked the unit’s first-ever procurement of a special-purpose vehicle; the team lacked experience in vehicle models, technical specifications, and budgeting—leading internally to 'model-selection anxiety'. 'We previously rented tank trucks, but they were inefficient and costly; this time, we wanted to go all-in with a professional, mobile sewage treatment vehicle.' recalled the head of the unit’s Equipment Department. According to local government procurement practices, the budget was capped at approximately RMB 397,000. After extensive consultation, the unit turned its attention to Chengli Special Purpose Vehicle Co., Ltd.—a manufacturer with decades of expertise in sanitation vehicles based in Suizhou, having served over 500 municipal sanitation departments nationwide, including landmark projects such as 15 street-sweeping vehicles for Wuhan Municipal Administration Bureau and 10 five-cubic-meter water-sprinkling vehicles for Henan Provincial Sanitation Institute. Model Selection Process: End-to-End Consultation from Zero to One The unit contacted Sales Manager Zhang Yue (Tel: ) via Chengli’s official hotline . Ms. Zhang’s team promptly engaged, delivering comprehensive consulting services—from initial needs analysis to precise model matching. 'We were most concerned about whether the vehicle could be registered locally and whether operation would be complex,' stated the unit’s Technical Director. Chengli recommended a China VI-compliant sewage treatment vehicle built on the Dongfeng 3308 mm wheelbase chassis, model reference CLW5070GSSD6 (fully compliant with official announcement parameters, eligible for registration nationwide). This model meets China VI emission standards, aligning with current environmental policies; its upper structure features a vacuum pump plus separation system enabling continuous operation, with a daily treatment capacity of approximately 100–150 cubic meters. Chengli emphasized three key advantages: (1) factory-direct sales eliminating intermediaries—resulting in savings of RMB 8,000–15,000 versus 4S-channel equivalents for identical configurations; (2) local production in Suizhou, ensuring standard-model delivery within 7–15 days to meet urgent deployment requirements; and (3) complete official announcement compliance, guaranteeing seamless nationwide registration, annual inspection, and commercial operation. Subsequently, the unit verified all 108 official announcement parameters against tender requirements and confirmed full compliance. Regarding budget, Ms. Zhang provided a detailed quotation: the China VI Dongfeng 3308 mm wheelbase sewage treatment vehicle (approx. 5 m³ tank capacity) had an all-inclusive, tax-inclusive landed price of RMB 318,000–375,000—well within local procurement guidelines. Ultimately, the unit opted for single-source procurement, citing the absence of locally available alternatives and Chengli’s lifelong upper-structure service commitment, alongside Dongfeng chassis’ nationwide warranty coverage. Data Comparison: Why This Model? To help readers better understand the selection rationale, below is a comparative analysis of core parameters between Chengli’s recommended model and two representative competitors. Data sources include publicly released tender documents and Chengli’s proprietary product database (946 records). Item | Chengli CLW5070GSSD6 (Recommended) | Competitor A (Bra