Case Study and Bid-winning Solution Analysis of the Jilin China VI Dongfeng 3308 mm Wheelbase Sewage Treatment Vehicle Government Procurement Project In 2026, a municipal sanitation department in Jilin Province explicitly specified procurement of one sewage treatment vehicle compliant with China VI emission standards as part of its annual equipment renewal plan. After multiple rounds of evaluation, on-site inspections, and open tendering, Chengli Special Purpose Vehicle Co., Ltd. was awarded the contract to supply its Dongfeng 3308 mm wheelbase sewage treatment vehicle (Model: CLW5070GSSD6; approved by MIIT). This article provides a detailed analysis of the selection rationale and bid-winning solution from perspectives including component procurement, after-sales service, and cost control. I. Project Background and Procurement Requirements The municipal sanitation department is responsible for routine maintenance and emergency response across multiple sewage treatment stations within its jurisdiction. Its existing equipment is outdated and fails to meet current emission standards. The newly procured vehicle must satisfy the following requirements: - Comply with China VI emission standards and support reliable cold-start performance under Jilin’s low winter temperatures; - Feature a 3308 mm wheelbase for enhanced maneuverability on urban and rural roads; - Possess core functions including sewage suction, solid-liquid separation, and preliminary treatment; - Ensure timely component supply and rapid after-sales response. According to publicly released tender information, the procurement budget was capped at approximately RMB 385,000. Chengli Special Purpose Vehicle secured the bid with a unit price of approximately RMB 320,000. The delivery cycle was about 15 days—consistent with Chengli’s standard practice of zero-inventory shipping and typical delivery timelines of 7–15 days for conventional models. II. Component Procurement Case Analysis: Consumable Parts List and Price Transparency For high-frequency-use equipment such as sewage treatment vehicles, component procurement costs constitute a critical long-term operational variable. In this case, Chengli provided a fully transparent consumable parts list. Below is a reference list of commonly replaced components for this model (CLW5070GSSD6): CLW5070GSSD6 Sewage Treatment Vehicle Consumable Parts List and Reference Prices | Component Name | Specification/Model | Reference Unit Price (RMB) | Replacement Interval (Months) | |------------------------|---------------------|----------------------------|------------------------------| | Sewage Pump Seal Kit | CLW-SP-01 | ~180 | 6–8 | | Vacuum Pump Filter Cartridge | CLW-VF-02 | ~95 | 3–4 | | Hydraulic Oil Filter | CLW-HF-03 | ~120 | 6 | | Tank Sealing Ring | CLW-SE-04 | ~55 | 12 | | Tire (7.00R16) | OEM-Specified | ~650 per piece | 18–24 | | Air Filter | Dongfeng OEM | ~85 | 3 | The above prices are based on publicly available data from Chengli’s parts database and market inquiries; actual procurement prices shall be governed by contractual terms. Chengli guarantees same-day dispatch (within 24 hours) for all parts orders, with dedicated logistics services enabling delivery to Jilin Province within 2–3 days—significantly reducing equipment downtime. III. Price Transparency: Chengli Direct Sales vs. 4S Channel Comparison In government procurement, pricing transparency directly impacts tender evaluation scores. Taking this case as an example, the component procurement cost comparison between Chengli’s direct factory sales channel and the 4S channel is as follows: - Chengli