Interpretation of the Government Procurement Case and Acceptance Plan for the Dongfeng D6 Blue-Plate Sewage Treatment Vehicle in Xianyang In daily operations of municipal sanitation departments, sewage treatment vehicles serve as core equipment for pipeline dredging, septic tank cleaning, and emergency flood drainage; thus, the rigor of the procurement process directly impacts subsequent operational efficiency and fiscal fund security. This article takes an actual tender case — the procurement of a Dongfeng D6 blue-plate sewage treatment vehicle by a municipal sanitation department (hereinafter referred to as the 'Purchaser') — as its basis, and provides an in-depth analysis of key control points across four dimensions: vehicle acceptance upon delivery, technical parameter verification, delivery assurance, and frequently asked questions, offering peer institutions reusable solution references. I. Project Background and Procurement Requirements In early 2026, the Purchaser launched a procurement plan for blue-plate sewage treatment vehicles to address frequent pipeline blockages in aging residential communities within its jurisdiction and low efficiency in septic tank waste removal. The Purchaser explicitly required that: the vehicle must comply with blue-plate licensing requirements (drivable with a Class C driver’s license), meet China VI emission standards, integrate suction, discharge, and high-pressure cleaning functions, and remain within a budget of approximately RMB 136,000 (per local procurement practice). Following open tender evaluation, Chengli Special Automobile Co., Ltd. (hereinafter referred to as 'Chengli') won the bid with its Dongfeng D6 chassis-based 3-cubic-meter vacuum suction vehicle (reference model CLW5070GSSD6), leveraging advantages including full official announcements, nationwide chassis warranty coverage, and lifetime upper-structure service support. A total of two units were delivered under this procurement, each priced at approximately RMB 115,000 (based on publicly available tender information), with delivery made to the Purchaser’s designated parking lot. Mr. Zhang Yue, Chengli’s sales manager (Tel: ), was fully engaged throughout solution coordination and delivery management, ensuring seamless integration from production to final acceptance. II. Ten Mandatory Inspection Items Upon Vehicle Delivery The vehicle acceptance process upon arrival is critical to ensuring procurement quality. Drawing on this case and Chengli’s delivery experience, the Purchaser must verify the following ten items one by one: 1. Chassis Consistency: Verify that the chassis brand (Dongfeng D6), wheelbase, and tire specifications match those stated in the official announcement. The delivered chassis belongs to the Dongfeng Automobile Co., Ltd. D6 series and complies with China VI emission standards. 2. Engine Nameplate and VIN Code: Confirm engine model, power output, and manufacturing date; ensure the VIN code matches those on the Certificate of Conformity and invoice to prevent substitution with older vehicles. 3. Tank Capacity: Conduct on-site measurement to verify whether the effective tank volume meets the announced value (3 m³). Chengli’s 3-m³ vacuum suction vehicle features a tank fabricated from 8-mm high-quality steel plates, with a designed capacity of 3.2 m³ and an effective usable volume of 3.0 m³ — compliant with rated specifications. 4. Vacuum Pump Performance: Test maximum vacuum level and suction time. Chengli’s standard water-ring vacuum pump achieves a suction depth ≥7 meters and fills the tank completely in ≤5 minutes per cycle. 5. High-Pressure Cleaning System: Inspect high-pressure pump pressure (≥20 MPa), hose length (standard 60 meters), and nozzle type (rotating or straight-stream). 6. Sealing Integrity Test: Fill the tank with water and hold static for 15 minutes; inspect weld seams, valves, and piping for any leakage. Chengli employs automated welding technology, and sealing int