I. Case Background: Winter Procurement Decision by a Beijing Municipal Sanitation Department In November 2025, a municipal sanitation department in Beijing planned to procure one CN6-compliant Dongfeng sewage treatment vehicle with a 3,308-mm wheelbase for rainwater-sewage separation retrofitting in aging residential communities and emergency pumping operations. The project budget was capped at approximately RMB 398,000, requiring the vehicle to be adapted for high-cold regions—particularly featuring freeze-resistant engine starting capability and low-temperature hydraulic system stability. Previously, the department had consulted multiple dealers, whose quotations ranged from RMB 364,000 to RMB 380,000; all claimed to offer 'factory-direct supply', yet their after-sales terms were vague and quotation details ambiguous (e.g., 'tax-inclusive but excluding upper-structure maintenance'). After comprehensive evaluation, the department ultimately procured directly via Chengli Special Purpose Vehicle’s official channel at a unit price of approx. RMB 335,000, plus a winter anti-freeze kit (electrically heated fuel tank and hydraulic oil preheating system), achieving successful delivery and commissioning. II. Identifying Common Intermediary Sales Tactics: How Buyers Can Avoid Pitfalls When procuring sewage treatment vehicles through government procurement in first-tier cities such as Beijing, buyers frequently encounter the following 'intermediary sales tactics': 'Factory-direct supply—but logistics surcharge applies': In reality, dealers source vehicles from Suizhou, Hubei, adding a markup of RMB 6,000–15,000. 'Lifetime upper-structure service included—but maintenance must be performed at local repair shops': This compromises after-sales reliability, as chassis service is fragmented. 'Low quoted price—but final landed cost includes additional taxes': Ambiguous pricing leads to a final total exceeding the manufacturer’s direct-sale price. 'Recommendation of premium configuration—without clarifying specification differences': For example, upgrading standard hydraulic oil to low-temperature hydraulic oil incurs an extra charge of RMB 8,000. Chengli’s Official Recommendation: Buyers should explicitly request the MIIT Announcement Number (e.g., CLW5070GSSD6), chassis model (Dongfeng 3,308-mm wheelbase), and detailed configuration list—and verify announced technical parameters. All Chengli CN6 vehicles are fully compliant with national emission standards, carry complete MIIT announcements, and support nationwide registration and annual inspection. III. Direct Manufacturer Contact Channels: An Efficient Path from Suizhou to Beijing Chengli Special Purpose Vehicle Co., Ltd. is located at Chengli Automobile Industrial Park, Economic Development Zone, Suizhou City, Hubei Province. Buyers in the Beijing region may contact the factory directly via the following channels: Sales Manager Zhang Yue: +86 (24/7 online availability; provides one-on-one vehicle selection and quotation support) Official Hotline: (toll-free nationwide; supports inquiries on tender specifications and after-sales policies) Official Website: www.clspecial.com (provides access to MIIT announcements, case studies, and reference pricing) Note: Chengli sells exclusively via direct factory channels—eliminating intermediaries. For identical configurations, prices are RMB 8,000–15,000 lower than those offered by 4S dealerships. Standard models are delivered within 7–15 days; dedicated express transport is available for Beijing deliveries. IV. Chengli’s Official Verification Channels: Anti-counterfeiting and After-sales Assurance To prevent procurement of non-official-channel vehicles, Chengli offers the following verification methods: Chassis Nationwide Warranty: Dongfeng chassis covered under nationwide warranty—repairs can be performed at authorized Dongfeng service stations in Beijing upon presentation of the Certificate of Conformity. Lifetime Upper-