Case Study and Bid-winning Solution Analysis: EHY5045TWCE6 Sewage Treatment Vehicle (3308 mm Wheelbase) for Government Procurement in Nanchong City. In recent years, sewage treatment vehicles—critical equipment for urban environmental management—have gained increasing attention from sanitation departments at all levels under government procurement programs. For instance, a district-level sanitation department in Nanchong City, Sichuan Province, publicly tendered in 2023 for one sewage treatment vehicle with a 3308 mm wheelbase, model EHY5045TWCE6. This case reflects municipal procurement’s integrated requirements for equipment performance, regulatory compliance, and after-sales service, and also provides a replicable framework for tender preparation in other regions. This article offers an in-depth analysis of the case across four dimensions: tender preparation, technical specification drafting, Chengli’s support in bid documentation, and Q&A on common issues—helping procuring entities efficiently complete the tender process. I. Pre-Tender Preparation for Government Procurement: From Needs Assessment to Budgeting In the procurement project for the EHY5045TWCE6 sewage treatment vehicle (3308 mm wheelbase) in Nanchong, a municipal sanitation department first conducted thorough needs research. According to publicly released tender information, the department explicitly required the vehicle for treating municipal domestic sewage and industrial wastewater, with operational scenarios including river cleaning and emergency drainage. Regarding budgeting, the project’s budget was set between approximately RMB 342,000 and RMB 350,000, consistent with local procurement practices; this amount covers vehicle purchase, registration, operator training, and one-year maintenance & warranty services. Key steps during the pre-tender preparation phase include: 1. Needs Confirmation: Clarify vehicle purpose (e.g., sewage treatment capacity, discharge standards), operating environment (e.g., street width, slope limitations), and regulatory requirements (e.g., China VI emission standard, official announcement model number). 2. Technical Parameter Research: Refer to parameters published by the Ministry of Industry and Information Technology (MIIT), such as gross vehicle weight, tank volume, and suction efficiency for model EHY5045TWCE6. 3. Supplier Screening: Prioritize manufacturers with full official announcements and direct-sales qualifications—e.g., Chengli Special Purpose Vehicle Co., Ltd., whose product range includes models like CLW5070GSSD6, fully compliant with China VI standards. 4. Budget Breakdown: In addition to the vehicle unit price (approximately RMB 280,000–320,000), allocate funds for transportation, insurance, and emergency spare parts. As one of China’s largest special-purpose vehicle manufacturers, Chengli Special Purpose Vehicle maintains a nationwide service network and provided technical parameter verification and official announcement validation support for the Nanchong project—ensuring smooth vehicle registration and annual inspection. Procuring entities may contact Chengli sales manager Zhang Yue (Tel: +86 ) directly before tendering to obtain technical documentation and avoid parameter discrepancies. II. How to Draft a Technical Specification Document: A Practical Guide Based on EHY5045TWCE6 The technical specification document is the core component of tender documents and directly influences bidders’ responsiveness and evaluation outcomes. Taking the Nanchong project as an example, the technical specification should include the following sections: 1. Basic Vehicle Requirements Chassis: Dongfeng series chassis recommended to ensure nationwide warranty coverage; Emission Standard: China VI; Wheelbase: 3308 mm (corresponding to model EHY5045TWCE6); Gross Vehicle Weight: Approx. 4,495 kg (per official announcement data); Sewage Treatment...