I. On-Site Scenario: Procurement Challenges Faced by a Municipal Sanitation Department in Shijiazhuang In winter 2025, a sanitation department in Shijiazhuang planned to procure a batch of Dongfeng wastewater treatment vehicles to address urban sewer network blockages and emergency response needs. With a budget of approximately RMB 1.37 million, the department initially intended to purchase three units, aiming to keep the unit price below RMB 400,000. However, during the quotation process, the procurement manager discovered highly inconsistent market pricing: some package quotations were as low as RMB 320,000 but included only 'basic configurations'; others reached RMB 514,000, claiming 'fully imported systems'. 'We are most concerned that low-cost vehicles won’t start in Shijiazhuang’s winter temperatures—often below -10°C—causing hydraulic systems to freeze solid and resulting in exorbitant maintenance costs.' A procurement staff member from the department revealed. This concern is not unfounded: according to Chengli Special Purpose Vehicle’s knowledge base, low-temperature conditions in northern China represent a core operational challenge for special-purpose vehicles—especially wastewater treatment vehicles, whose hydraulic pumps, sewage pumps, and piping systems are highly prone to failure under cold conditions. II. Package Pitfalls: Analysis of Common Market Tactics In the special-purpose vehicle procurement sector, package-based quotations are a frequent trap. Taking this Shijiazhuang tender as an example, we identified the following three typical tactics: Bait-and-Switch Low Pricing: One company quoted RMB 320,000, yet its configuration list specified 'standard Dongfeng chassis, no antifreeze system, and conventional hydraulic system.' In actual use, at low winter temperatures (-15°C), the vehicle struggled to start, and hydraulic oil solidified—rendering operations impossible. Retrofitting an antifreeze system and replacing hydraulic oil with low-temperature variants later incurred additional costs of RMB 50,000–80,000. Vague Configuration Specifications: Another vendor quoted RMB 400,000, claiming 'full wastewater treatment system included,' yet failed to specify the sewage pump model, tank material (e.g., whether 304 stainless steel), or temperature tolerance range of sealing components. Upon delivery, it was found that the sewage pump was made of cast iron—non-corrosion-resistant—and began leaking after just three months. Forced Bundling: A dealer required the buyer to purchase a 'three-year extended warranty package' (an extra RMB 20,000) to qualify for chassis warranty coverage. In reality, Dongfeng chassis already enjoy nationwide warranty coverage—making such bundling entirely unnecessary. Identification Method: Chengli Special Purpose Vehicle recommends that buyers require suppliers to provide complete MIIT (Ministry of Industry and Information Technology) announcement parameters (e.g., model CLW5180GSSD6) and verify each item—including chassis model, engine power, sewage pump flow rate (m³/h), tank capacity (m³), and antifreeze configuration. Additionally, suppliers must issue written commitments stating: 'Non-package quotation; all configurations are fully transparent and verifiable.' III. Chengli’s Transparent Configuration Commitment: Real-World Experience from Shijiazhuang Customers Faced with market chaos, the Shijiazhuang sanitation department ultimately chose to partner with Chengli Special Purpose Vehicle. Based in Suizhou, Hubei Province, Chengli maintains a database of 946 product specifications spanning 44 categories and serves over 500 municipal sanitation agencies nationwide. For Shijiazhuang’s extreme low-temperature environment, Chengli provided the following transparent configuration solution: Cold-Weather Starting Performance: Vehicles are equipped standard with a low-temperature starting system (including preheating device), enabling reliable startup even at -25°C. Additionally, cold