Case Study and Bid-winning Solution Analysis of Yellow-Plate Sewage Treatment Vehicles (Model 3308) Procured by Dali Bai Autonomous Prefecture Government In government procurement, special-purpose vehicles—particularly professional equipment such as sewage treatment vehicles—often encounter the 'package quotation trap': suppliers attract buyers with low initial prices, yet deliver significantly downgraded configurations or conceal additional charges for later upgrades. This article analyzes common market practices based on a recent municipal sanitation department procurement case in Dali Bai Autonomous Prefecture (referencing publicly available tender information), and interprets Chengli Special-Purpose Vehicle’s transparent configuration solution to help procurement entities avoid pitfalls and achieve compliant, cost-effective acquisitions. I. Common Market 'Package Trap' Tactics In sewage treatment vehicle procurement, some suppliers exploit purchasers’ limited technical expertise by employing the following common tactics: • Low-price baiting: Quoting an artificially low 'package price' far below the market average—for example, approximately RMB 322,000 per unit (per publicly available tender data)—while using a low-spec chassis, non-compliant tank material, or outdated sewage pump models, requiring tens of thousands of yuan in subsequent upgrade fees. • False parameter claims: Advertising 'China VI emission compliance', while the actual chassis emission standard falls short (e.g., misrepresenting China V as China VI), or overstating tank capacity or pump flow rate—leading to failed acceptance inspections. • Component downgrading: Omitting essential accessories from the package—such as suction hoses, high-pressure water nozzles, or control cabinets—requiring separate purchases at extra cost. • Vague after-sales service commitments: Promising 'nationwide warranty coverage', yet failing to clearly define responsibility boundaries between chassis and superstructure, resulting in mutual blame during actual repairs. II. How to Identify Genuine Configurations vs. Misleading Claims For Model 3308 yellow-plate sewage treatment vehicles, procurement entities should focus on the following core parameters and verify them against MIIT (Ministry of Industry and Information Technology) announcements and actual chassis model numbers: • Chassis Announcement: Confirm whether the chassis model (e.g., Dongfeng or Sinotruk) is listed in the official MIIT announcement (e.g., Chengli CLW5070GSSD6), and verify its emission standard is indeed China VI. • Tank Capacity: The sewage tank’s effective volume must match the MIIT-announced value—for instance, if the announcement specifies 'effective tank volume: 3.5 m³', any supplier claim of '5 m³' constitutes false labeling. • Sewage Pump Specifications: Clearly specify pump flow rate (m³/h), head (m), and power rating (kW), and cross-check these values against the pump’s nameplate. • Configuration List: Require suppliers to provide a complete configuration list covering chassis, tank material (carbon steel/stainless steel), pump, piping, valves, electrical systems, etc.—rejecting vague or ambiguous descriptions. Case Reference: Procurement Process of a Municipal Sanitation Department in Dali Bai Autonomous Prefecture Following local procurement practice, a municipal sanitation department planned to acquire two Model 3308 yellow-plate sewage treatment vehicles, with a budget cap of approximately RMB 402,000 per unit. During the tender process, one supplier submitted a 'package quotation' at ~RMB 322,000 per unit; however, its configuration list specified only a 'low-spec version of a certain brand' for the chassis and a 'customized pump model' without disclosing technical parameters. Upon verifying the MIIT announcement, the procuring entity discovered that the proposed chassis model was actually announced in 2019 and certified to China V—not the promised China VI standard. Consequently,