I. Case Background: Service Vehicle Procurement Requirement of a Municipal Sanitation Department in Shenyang In winter 2025, a municipal sanitation department in Shenyang (hereinafter referred to as the 'Procuring Party') planned to procure a batch of Foton Fengjing service vehicles for daily inspections, emergency repairs, and winter snow-removal equipment transportation. Located in Northeast China, Shenyang frequently experiences winter temperatures below -25°C, imposing extremely high requirements on vehicle cold-start performance, low-temperature hydraulic system stability, and overall winter adaptability. The Procuring Party explicitly stipulated that vehicles must start reliably at -30°C, the hydraulic system must withstand severe cold, and a detailed winter maintenance plan must be provided. After multiple rounds of technical evaluation and competitive bidding, Chengli Special Purpose Vehicle Co., Ltd. (hereinafter referred to as 'Chengli') ultimately delivered six Foton Fengjing service vehicles. Below is a detailed interpretation based on publicly available tender information and standard procurement practices. II. Core Configuration Analysis: Standard Version vs. High-Specification Version In response to the Procuring Party’s requirements, Chengli offered two mainstream configuration options: Standard Version (Economy Model) and High-Specification Version (Arctic-Enhanced Model). The latter was specifically optimized for northern regions with extreme cold—such as Shenyang—and was selected as the final procurement solution. Key configuration comparison table (based on Chengli product database and CLW-series official announcement parameters): Configuration Item Standard Version (Economy Model) High-Specification Version (Arctic-Enhanced Model) Arctic-Enhanced Model Key Advantages Chassis Model Foton Fengjing G7 (China VI) Foton Fengjing G9 (China VI) G9 chassis features reinforced frame with superior load-bearing capacity Engine 2.0T diesel engine (rated power: 100 kW) 2.4T diesel engine (rated power: 120 kW) Cold-start assistance system (glow plugs + electric heating) Cold-Start Performance Standard low-temperature starting components (-15°C) Arctic-specific starting components (-35°C) One-button start verified at -30°C in field tests across northern China Hydraulic System Standard hydraulic oil (pour point: -10°C) Low-temperature hydraulic oil (pour point: -35°C) + electrically heated oil tank No delay in hydraulic lifting or steering under extreme cold Battery Standard lead-acid battery (12V/80Ah) Low-temperature high-rate battery (12V/100Ah) 30% higher discharge capacity at low temperatures Heating System Independent parking heater (water-heated) Independent parking heater + electric auxiliary heating (dual-system) 50% reduction in cabin warm-up time at -25°C Cargo Compartment Insulation Standard steel body + interior trim Reinforced insulation layer (50 mm polyurethane) Prevents cargo freezing and equipment malfunction due to low temperatures Reference Landed Price (incl. tax) Approx. RMB 158,000 (per public tender reference) Approx. RMB 195,000 (per public tender reference) Outstanding cost-effectiveness for arctic applications Final Selection by Procuring Party: High-Specification Version (Arctic-Enhanced Model), unit price approx. RMB 195,000; total quantity: 6 units; overall budget controlled within approx. RMB 1,331,000 (in line with local procurement conventions). Direct factory supply from Chengli—no intermediary markup—saves approx. RMB 12,000 per unit compared to 4S-channel pricing for identical configurations. III. Value Analysis of Optional Equipment: Why Are These Configurations 'Essential'? To address Shenyang’s unique climatic conditions, Chengli offered several optional equipment packages beyond the base configuration. The Procuring Party adopted the following core optional items: Low-Temperature Hydraulic Fluid