Procurement Case of Dongfeng Yizhan Series Sewage Treatment Vehicle in Lhasa: Interpretation of Winter Anti-Freeze Solutions and Budgeting — In the high-altitude, frigid region of Lhasa, a municipal sanitation department recently completed the procurement and delivery of a batch of Dongfeng Yizhan series sewage treatment vehicles. These vehicles are primarily deployed for emergency treatment and transportation of urban pipeline and domestic sewage, with special emphasis on overcoming operational bottlenecks under winter low-temperature conditions. This article provides an in-depth analysis—based on publicly available tender information and Chengli Special Purpose Vehicle’s actual delivery records—from perspectives including price comparison, anti-freeze performance, and long-term cost efficiency. I. Project Background and Procurement Requirements Lhasa is located at high altitude, where winter temperatures can drop below -20°C. Conventional sewage treatment vehicles often encounter difficulties such as engine starting failure, hydraulic system solidification, and pipeline freezing under such low-temperature conditions. The Dongfeng Yizhan series sewage treatment vehicles procured for this project must meet the following core requirements: • Cold-weather Starting Performance: Engines must be equipped with pre-heating devices to ensure one-button start capability at -25°C. • Low-Temperature Hydraulic Stability: Hydraulic oil must be low-temperature resistant; pipelines must be insulated to prevent solidification. • Winter Maintenance Plan: Comprehensive winter maintenance manual and guaranteed spare parts supply cycle must be provided. According to local procurement practices in Lhasa, the total project budget was capped at approximately RMB 886,000, with plans to procure three sewage treatment vehicles—each priced around RMB 260,000. II. Winning Bid Price vs. Market Average Price Chengli Special Purpose Vehicle’s Dongfeng Yizhan series sewage treatment vehicle (model reference: CLW5180GSSD6 chassis-based conversion solution) secured the bid at a total price of approximately RMB 765,000, or ~RMB 255,000 per unit. This represents a saving of ~RMB 25,000–65,000 per unit compared to the concurrent market average price (~RMB 310,000–354,000 per unit), translating into an overall budget reduction of ~8–20%. The table below compares quotation differences across channels: Procurement Channel | Unit Price (RMB 10,000) | Total Price (3 units, RMB 10,000) | Key Differences ---|---|---|--- Chengli Factory Direct (Winning Bid) | ~25.5 | ~76.5 | Direct factory supply—no distributor markup; OEM chassis covered by nationwide warranty; lifetime after-sales service for superstructure 4S Channel (Market Average Reference) | ~28–32 | ~84–96 | Includes dealer profit margin, transportation & warehousing costs; higher spare parts markup Competing Brands (Bidding) | ~27–30 | ~81–90 | No dedicated low-temperature configurations; higher winter failure rates; elevated post-purchase maintenance costs Data Source: Public tender documents and Chengli Special Purpose Vehicle quotation sheet. III. Where Does Factory Direct Procurement Save Costs? As a local manufacturer based in Suizhou, Chengli Special Purpose Vehicle possesses ‘zero-inventory delivery’ capability. For this Lhasa project, both chassis and superstructure were fully manufactured within Chengli’s industrial park. Standard models can be delivered within 7–15 days, eliminating distributor markups entirely. Specific savings include: • Chassis Cost Reduction: Dongfeng chassis sourced directly from factory—saving ~RMB 3,000–5,000 per unit versus 4S channel pricing. • Zero-Markup Superstructure Customization: For Lhasa’s low-temperature environment, standard features include heated fuel tank, low-temperature hydraulic oil, and insulated pipeline sleeves—configurations typically commanding an additional premium of RMB 5,000–8,000 elsewhere. • Fully Compliant Documentation—No Extra Modification Fee