Product Name: Freezer Cold Storage

Freezer Cold Storage (Low-Temperature Freezer Warehouse)

I. Standard Temperatures (National Standard GB50072-2021)

Standard Freezer: -18°C to -25°C (national standard -18°C, baseline for food storage)

Blast Freezer: -35°C to -40°C (quick freezing of fresh products, not for long-term storage)

Ultra-Low Temperature Freezer: -50°C to -80°C (premium seafood, biological reagents, vaccines)

II. Suitable Storage Categories

1. Meat and Poultry: frozen pork, beef, lamb, chicken, duck; storage period 6-24 months

2. Aquatic Products: frozen fish, shrimp, shellfish; shelf life 9-12 months

3. Frozen Foods: dumplings, meatballs, pastries, ice cream

4. Others: pre-cooked dishes, butter, some chemical raw materials

> Principle: low temperature freezes moisture in food, inhibits bacterial growth, achieving long-term fresh storage

III. Two Main Structures

1. Prefabricated Cold Storage (commonly used in the market)

Enclosure: 100-120mm thick polyurethane insulated color steel panels; good insulation, quick assembly, relocatable

Suitable for: small to medium cold storage (fresh food stores, slaughterhouses, central kitchens, small processing plants)

2. Civil Engineering Freezer

Reinforced concrete structure with internal insulation; strong load-bearing, long service life, stable temperature

Suitable for: large cold chain logistics parks, 10,000-ton food warehouses, fixed warehouses in meat processing plants

IV. Four Core Components of Cold Storage

1. Refrigeration Unit (heart): piston compressor for small units, screw compressor for medium and large units; refrigerants R404A/R22

2. Evaporator Unit: supplies cold air inside the warehouse, with electric defrosting

3. Insulated Enclosure: blocks external heat, determines energy consumption

4. Electrical Control System: intelligent temperature control, temperature alarm, automatic start/stop

V. Cost & Energy Consumption Reference (2026 Market)

Small warehouse (10-50 m³): RMB 800-1200/m³

Medium-large warehouse (above 100 m³): RMB 500-900/m³

Energy consumption: 25%-35% higher than 0°C cold storage; inverter units save about 30% energy

VI. Freezer ≠ Blast Freezer (Key Distinction)

Freezer: for storage, long-term holding of already frozen goods at stable temperature

Blast Freezer: for processing, rapid deep freezing of fresh raw materials, then transferred to freezer for storage

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