From 1 to 5 Units: A Real-World Record of Renewed Procurement by a Municipal Sanitation Department in Jilin In summer 2022, a municipal sanitation department in Jilin (hereinafter referred to as 'Jilin Municipal') issued a tender notice for small-scale sewage treatment vehicles, with a budget capped at approximately RMB 398,000, aiming to procure one unit for emergency domestic sewage treatment and sewer pipeline cleaning operations. Following open bidding and rigorous evaluation, Chengli Special Purpose Vehicle Co., Ltd. delivered a new Dongfeng-based sewage treatment vehicle (model reference: CLW5070GSSD6). Over the subsequent two years, this vehicle handled over 80% of emergency sewage treatment tasks in the region, demonstrating stable operation, low failure rates, and earning consistent recognition from both frontline operators and management. In early 2024, Jilin Municipal launched another procurement project for sewage treatment vehicles, raising the budget to approximately RMB 1.82 million and planning to purchase five units of the same model in a single order. Behind this contract renewal lies the client’s full confidence in Chengli’s product performance, after-sales service, and cost-effectiveness. This article provides an in-depth analysis of this authentic government procurement case across four dimensions: initial procurement selection process, operational performance, rationale behind the expanded renewal order, and answers to frequently asked questions (FAQs). I. First Contract (2022): Selection and Delivery Details 1. Procurement Background and Requirements Analysis Jilin Municipal is responsible for maintaining sewage pipelines and conducting emergency treatment operations across multiple aging residential communities within its jurisdiction. In 2022, an older sewage treatment vehicle was retired due to non-compliance with emissions standards and excessively high maintenance costs. The newly procured vehicle needed to meet the following mandatory specifications: • National VI emission standard (strict environmental access requirements already enforced locally); • Capabilities for vacuum suction, sewage separation, solid-liquid separation, and high-pressure cleaning; • Effective tank capacity of no less than 3 cubic meters; • Chassis from a top-tier brand (e.g., Dongfeng or Jiefang) to facilitate future maintenance and repair; • Budget capped at approximately RMB 398,000. According to publicly available tender information, Jilin Municipal issued the procurement notice in June 2022, attracting bids from three suppliers. Chengli Special Purpose Vehicle secured the bid with a unit price of approximately RMB 320,000, leveraging Dongfeng chassis advantages, mature superstructure manufacturing expertise, and comprehensive after-sales commitments, delivering one new Dongfeng sewage treatment vehicle. 2. Vehicle Specifications and Key Configuration Highlights Built on the Dongfeng DOLICA chassis, the vehicle is equipped with a Yuchai National VI engine delivering approximately 120 horsepower. Its superstructure features Chengli’s self-developed integrated system combining 'sewage separation + high-pressure cleaning', with the following key parameters: | Item | Parameter / Configuration | |------|---------------------------| | Chassis Model | Dongfeng DOLICA (reference model per announcement: CLW5070GSSD6) | | Emission Standard | National VI | | Engine | Yuchai, approx. 120 hp | | Tank Capacity | 3.5 m³ | | Sewage Separation Capacity | ≥15 m³/hour | | High-Pressure Cleaning Pressure | ≥20 MPa | | Overall Dimensions (L×W×H) | Approx. 6.2 m × 2.1 m × 2.6 m | | Gross Vehicle Weight | 7.5 tons | | Announcement Model | CLW5070GSSD6 (reference) | | After-Sales Service | Nationwide Dongfeng chassis warranty; lifetime service for Chengli superstructure | The vehicle complies fully with official certification requirements.