Fresh and Perishable Goods
Includes fresh fruits and vegetables, fresh milk, yogurt, chilled meat, eggs, live aquatic products, and fresh flowers. These usually require Class A refrigerated trucks with a temperature range of 0°C to 12°C to maintain freshness and prevent spoilage.
Deep-Frozen Goods
Covers frozen meat products, quick-frozen dumplings (jiaozi/tangyuan), ice cream, and frozen seafood. These require environments maintained at -10°C to -20°C (or lower)-using Class B, C, or F trucks-to prevent thawing and deterioration.
Pharmaceutical and Biological Products
Includes vaccines, blood products, biological reagents, and insulin. Transport must comply with GSP certification standards using specialized Class G or H refrigerated trucks, strictly maintaining constant temperatures of 2°C–8°C or below -25°C to preserve biological activity.
Other Temperature-Sensitive Goods
Specialized items sensitive to temperature fluctuations-such as certain chocolates, premium bakery dough, and electronic components-also require transport in refrigerated trucks with appropriate temperature zones to prevent quality degradation.