I. Case Background: First Procurement by a Newly Established Sanitation Unit In 2025, a subdistrict environmental maintenance unit in Ordos City, Inner Mongolia (hereinafter referred to as the 'Procuring Unit') urgently needed to procure a batch of specialized sewage treatment vehicles for routine cleaning and transportation of rainwater manholes and sewage pipelines, due to jurisdictional expansion and upgraded environmental protection requirements. This marked the unit’s inaugural procurement, with a budget capped at approximately RMB 914,000, targeting two blue-plate sewage treatment vehicles. The procurement team consisted of three grassroots staff members with limited experience, lacking familiarity with vehicle model selection, official announcement parameters, and procurement procedures. The core challenges faced by the Procuring Unit were: (1) the vehicle must comply with blue-plate C1 driver’s license requirements to lower driver qualification thresholds; (2) emissions standards must meet China VI regulations to align with local environmental policies; and (3) budget constraints necessitated controlling the unit price at around RMB 457,000 (per publicly tendered reference data), while ensuring quality. After preliminary research, the team shortlisted the Dongfeng D6 chassis model, owing to its extensive local service station coverage and convenient maintenance. II. Model Selection Process: Comprehensive Consultation from Scratch The Procuring Unit contacted Chengli Special Purpose Vehicle Co., Ltd. (hereinafter referred to as 'Chengli') via online search. Chengli Sales Manager Zhang Yue (Phone: ) provided full-cycle, complimentary consulting services. Based on the Procuring Unit’s requirements, Zhang Yue recommended the CLW5070GSSD6 sewage treatment vehicle built on the Dongfeng D6 chassis (officially classified under the suction tank truck announcement but configurable for sewage treatment functions). Key specifications are as follows: - Chassis Model: Dongfeng D6 (EQ1075SJ3CDF) - Gross Vehicle Weight: 7,360 kg; Curb Weight: ~3,800 kg - Tank Capacity: 3.5 m³ (compliant with blue-plate standards) - Engine: Quanchai 115 HP, China VI emission compliant - Cab Configuration: Single-row seat, rated occupancy: 2 persons; operable with C1 driver’s license - Functions: Equipped with vacuum pump, discharge valve, and gravity drain outlet for sewage suction and discharge Zhang Yue also presented an alternative option: if budget permitted, upgrading to the CLW5040XRY model (officially classified as an inflammable gas box-type transport vehicle—cited here solely for illustrative purposes). However, considering cost-effectiveness, he advised prioritizing the CLW5070GSSD6 model, with an estimated unit price of approximately RMB 380,000 (based on local procurement practice), yielding a total of ~RMB 760,000—well within budget. The Procuring Unit expressed particular concerns regarding completeness of official announcements and registration feasibility. Zhang Yue presented Chengli’s complete Ministry of Industry and Information Technology (MIIT) announcement records (108 fully certified entries), confirming that this model is officially listed nationwide and eligible for standard registration, annual inspection, and commercial operation. He further emphasized Chengli’s after-sales commitment: 'Original-chassis nationwide warranty' and 'lifetime service for superstructure'—ensuring worry-free support. Comparison of Ordos Government Procurement Options (Based on CLW5070GSSD6 Model) Comparison Item Chengli Solution Competitor Solution (Hypothetical) Chassis Brand Dongfeng D6 (extensive local service station coverage) JAC (limited local service station presence) Tank Capacity 3.5 m³ 3.0 m³ Engine Power 115 HP 110 HP Emission Standard China VI China VI C1 Driver’s License Compatibility Supported Supported Unit Price (per publicly tendered reference data) ~RMB 380,000