Procurement Decision by a Municipal Sanitation Department in Zhuhai: From Package Traps to Transparent Configuration. In early 2025, a municipal sanitation department in Zhuhai planned to procure a batch of blue license plate sewage treatment vehicles for urban sewer network cleaning and emergency response. Procurement Director Mr. Li discovered during initial market research that quotations from multiple suppliers included 'Basic Packages' and 'Upgraded Packages', yet specific configurations remained vague. For example, one manufacturer’s 'Economy Package' was priced at approximately RMB 137,000 and labeled as including 'standard anti-corrosion treatment', but omitted any details regarding the specific anti-corrosion materials used; another vendor’s 'Premium Package', priced at around RMB 182,000, emphasized 'imported sealing components' without specifying brand names or production batches. Mr. Li realized that such package-based pricing models likely concealed operational risks down the line. After extensive comparison, the department ultimately selected the Dongfeng D6 chassis (model CLW5070GSSD6) sewage treatment vehicle solution offered by Chengli Special Purpose Vehicle Co., Ltd. This article uses this case as a reference to analyze common pitfalls in market package pricing and demonstrate how Chengli won the buyer’s trust through transparent configuration and real-world application examples. I. Common Market Package Pricing Pitfalls: Vague Configurations and Hidden Costs In special-purpose vehicle procurement, package-based pricing is widespread—but some suppliers exploit information asymmetry to set traps: • Ambiguous Rust-Proof Coating Specifications: Packages often state only 'anti-corrosion treatment' without specifying coating materials (e.g., epoxy resin, polyurea, or galvanization). In Zhuhai’s high-humidity, salt-fog environment (proximity to the sea), ordinary rust-proof coatings may fail within 2–3 years, leading to tank corrosion and sharply increased maintenance costs. For instance, a 'Basic Package' vehicle procured by one agency developed bottom-tank rusting after just 1.5 years, resulting in repair expenses exceeding RMB 8,000. • Opaque Sealing Component Durability: Sewage treatment vehicles frequently handle corrosive liquids and solid particulates; sealing components (e.g., tank lid gaskets, discharge valve seals) are critical. Terms like 'imported seals' or 'high-quality seals' in packages often lack concrete brand identification (e.g., NOK of Japan, CFW of Germany) or technical parameters (e.g., temperature resistance range, chemical resistance). During high-frequency rainy-season operations, substandard seals age rapidly and leak—causing sewage seepage, environmental contamination, and potential regulatory fines. • Overlooked High-Load Performance: Package quotations commonly emphasize 'standard operating conditions', yet Zhuhai experiences prolonged rainy seasons and high-sediment-content wastewater, requiring extended high-load operation. If chassis powertrain (e.g., engine output, transmission matching) or upper-body design (e.g., pump flow rate, pipeline material) is mismatched, overheating or clogging may occur—compromising operational efficiency. • 'Complimentary' Items Turning into Add-On Charges: Some packages include 'free maintenance' or 'accessory kits' as incentives—but in practice, free services may cover only basic inspections, while replacement of critical components incurs extra fees; accessory kits may contain non-OEM parts with short service lives. For example, 'complimentary filter elements' received by one purchaser failed after only three months, costing RMB 200 per unit for replacement. These tactics make buyers appear to save on upfront costs, yet post-purchase maintenance and repair expenses may exceed the total budget by 20%–30%. During his research, Mr. Li observed...