Bulk procurement by a municipal sanitation department in Shaoxing: Practical evaluation of the Ford New Generation V348 service vehicle under southern China’s humid and hot climate conditions. In southern regions—especially cities like Shaoxing, with its dense water networks and frequent rainy seasons—sanitation vehicles must not only perform routine cleaning and maintenance but also withstand unique environmental challenges such as high humidity and heavy rainfall. Recently, a municipal sanitation department in Shaoxing completed a key procurement initiative: bulk delivery of Ford New Generation V348 service vehicles for daily inspection, equipment transportation, and emergency response. This procurement process reflects government procurement’s stringent requirements for vehicle durability in humid and hot environments, and highlights Chengli Special Purpose Vehicle Co., Ltd.’s service capabilities in southern markets. According to publicly released tender information, the department launched this procurement plan at the end of 2025, with a budget capped at approximately RMB 1.331 million, aiming to procure four units of the Ford New Generation V348 service vehicle to replace aging models and enhance operational efficiency. After multiple rounds of evaluation, Chengli Special Purpose Vehicle Co., Ltd. secured the order by virtue of its customized configuration solutions and vehicle designs tailored to local environmental requirements. I. Procurement Background and Core Requirements Shaoxing lies within a subtropical monsoon climate zone, characterized by high annual average humidity and frequent typhoons accompanied by heavy rainfall during summer months. In daily operations, service vehicles must frequently navigate urban streets, riverbanks, and waste transfer stations—exposing chassis, body structures, and internal electrical systems to moisture-induced corrosion. Consequently, the core procurement requirements focused on three critical aspects: • Anti-corrosion coating: Chassis and key structural components required enhanced anti-rust treatment to withstand coastal high-salinity fog environments. • Sealant durability: Door, window, and engine compartment seals needed resistance to aging and humid-heat conditions to prevent rainwater leakage and dust ingress during the rainy season. • High-load operational performance: With increased operational frequency during the rainy season, vehicles were required to maintain stable power output and reliable braking performance under continuous rainfall conditions. II. Chengli’s Solution: Customized Modification and Localized Service Upon receiving the requirements, Chengli Special Purpose Vehicle Co., Ltd. performed targeted modifications based on the Ford New Generation V348 chassis (reference model number: CLW5040XJHJ6, among similar service vehicle products; specific parameters subject to actual delivery): • Chassis anti-corrosion: Employed electrophoretic coating technology, pre-treating the frame and suspension components and applying epoxy resin primer to significantly improve corrosion resistance. • Sealing system upgrade: Installed silicone rubber sealing strips combined with dual-layer sealing design to ensure door integrity without leakage even during torrential rain; added waterproof baffles in the engine compartment to protect electrical systems. • Air conditioning & dehumidification: Integrated high-capacity vehicle-mounted air conditioning and dedicated dehumidification modules to meet moisture-control requirements for onboard equipment in high-humidity environments. • Cargo compartment modification: Lined interior walls with stainless steel panels for easy cleaning and rust prevention; installed anti-slip floor textures to accommodate slippery working conditions during the rainy season. Post-delivery, customer feedback confirmed that during a two-week test period covering the Meiyu (plum rain) season, no water leakage or chassis corrosion occurred, and sealants ret