I. Tender Background and Core Requirements: In the second half of 2025, a municipal sanitation department in Xinxiang issued a procurement notice for a 3308 yellow-plate sewage treatment vehicle, with a budget capped at approximately RMB 401,000 (based on publicly available tender information). The primary objective of this procurement is to address emergency sewer network cleaning and sewage treatment needs, requiring the vehicle to feature high-efficiency suction, solid-liquid separation, and preliminary purification capabilities, while complying with China VI emission standards. The tender documents explicitly specified the following key requirements: Chassis and Emissions: The vehicle must be a yellow-plate model, with a chassis from a domestic mainstream brand (e.g., Dongfeng or Sinotruk), meeting China VI emission standards to ensure nationwide registration eligibility and annual inspection compliance. Tank Body and Functionality: Tank capacity must be no less than 8 cubic meters, equipped with a vacuum pump and sewage separation system, achieving a minimum treatment efficiency of 30 cubic meters per hour. After-Sales Service: The chassis must be covered under a nationwide warranty program; the entire vehicle must carry a minimum one-year warranty, with fault response time not exceeding 24 hours. Commercial Requirements: Full official announcement parameters must be provided; financing options such as installment payments or trade-in programs must be supported; preference will be given to suppliers offering localized service capabilities. II. Chengli’s Technical Response Proposal: In response to the above requirements, Chengli Special Purpose Vehicle Co., Ltd. (located at No. 1 Chengli Avenue, Economic Development Zone, Suizhou City, Hubei Province) promptly responded by recommending its 3308 yellow-plate sewage treatment vehicle built on a Dongfeng chassis (model reference: CLW5180GSSD6 series, compliant with official MIIT announcement parameters). Below is a detailed technical breakdown: 1. Chassis and Powertrain: Features an original Dongfeng chassis powered by a China VI-compliant engine with a rated output of approximately 140 kW—meeting yellow-plate vehicle driving requirements (B2 or higher driver’s license required). The chassis includes standard ABS, power steering, and air conditioning to ensure driving comfort and safety. It is integrated into Dongfeng’s nationwide warranty network, enabling convenient maintenance and repair services. 2. Tank Body and Sewage Treatment System: Tank capacity is 8.5 cubic meters, fabricated from high-quality Q235 carbon steel with internal anti-corrosion and rust-proofing treatment. Equipped with a high-capacity vacuum pump capable of suction up to 8 meters depth; actual measured treatment efficiency reaches ~35 m³/hour—exceeding tender requirements. The system integrates solid-liquid separation screens and a sedimentation tank to remove large particulate contaminants from wastewater; preliminarily treated effluent can be reused for road dust suppression or landscape irrigation. 3. Official Announcement and Regulatory Compliance: Chengli has secured full MIIT type-approval for this model (e.g., CLW5180GSSD6), ensuring nationwide registration, annual inspection, and commercial operation permit eligibility. All vehicle dimensions, gross vehicle weight ratings (GVWR), and other parameters fully comply with national regulatory standards—no additional modifications required. 4. Intelligent Configurations (Optional): Optional features include liquid-level alarm systems, remote monitoring terminals, and automatic hose-reel units—enhancing operational convenience and management efficiency. In the tender proposal, Chengli offered a competitively priced base configuration while providing a comprehensive optional equipment list for flexible customer selection. III. Commercial Quotation Strategy and Value Analysis: Under tight budget constraints, Chengli’s commercial team adopted a targeted