Hai Duong is the largest carrot exporting capital in Vietnam. Duc Chinh (Cam Giang), Nam Sach With a production volume of hundreds of thousands of tons exported to South Korea, Japan, and the Middle East, along with the largest onion and garlic cultivation area in Northern Vietnam. Kinh Mon and the famous lychee orchards in Thanh Ha. At the same time, Hai Duong boasts dynamic industrial parks such as Dai An, Tan Truong, and Nam Sach. To ensure carrots retain their bright orange color, firm skin, and root-free appearance, and to prevent onions and garlic from wilting, investing in high-tech cold storage systems is a mandatory requirement for export processing businesses.
Tan Long Refrigeration and Electrical Engineering Joint Stock Company We are a leading and reputable EPC general contractor, specializing in design consulting and construction. Cold storage for carrots, cool storage for onions and garlic, and cold storage for lychees for export in Hai Duong.. We apply advanced microclimate control technology, which helps agricultural products last for 4 to 6 months while maintaining their freshness and quality as when they were harvested.
1. Strict Technical Requirements for Preserving Carrots & Agricultural Products from Hai Duong
- Duc Chinh carrots, Cam Giang: The peak harvesting season is from January to April. After being washed thoroughly using an ozone machine, the carrots need to be stored in a cold storage facility to maintain the desired temperature. 0°C to +1°C and extremely high humidity 95% – 98%. If the humidity is below 90%, the carrots will lose water, shrivel, and turn black at the ends; if the temperature exceeds 3°C, the carrots will quickly grow white roots and sprout new leaves, reducing their commercial value.
- Kinh Mon onions and garlic: Unlike carrots, onions and garlic need to be stored in a cool, dry environment: Temperature 0°C to +2°C, humidity is tightly controlled 65% – 70%. If the humidity is too high, the bulbs will rot and sprout; if it's too hot, the garlic cloves will shrivel.
- Thanh Ha lychees: The cold storage vault needs to be cooled down quickly and maintained at a certain temperature. +2°C to +4°C, with humidity of 90% – 95% To preserve the fruit peel's natural deep red color for sea container shipping to Europe.
2. Technical Specifications Table for Specialized Storage in the Ocean
| Agricultural products | Set temperature | Relative humidity (RH) | PIR Panel Enclosure Standards | Safe storage time |
|---|---|---|---|---|
| German-exported carrots | 0°C to +1°C | 95% – 98% (ultra-humidifier) | 100mm PIR Panel | 4-6 months: The skin is bright red and glossy. |
| Kinh Mon onions and garlic | 0°C to +2°C | 65% – 70% (dry and cool) | PIR panel 75 – 100mm | 6-8 months without the shrimp sprouting |
| Fresh lychees from Thanh Ha | +2°C to +4°C | 90% – 95% | 100mm PIR Panel | 30-40 days for export to distant locations. |
3. Standard B2B Equipment Configuration Recommended by Tan Long
- Bitzer (Germany) / Dorin (Italy) compressor units: High cooling efficiency, energy savings of 25% – 30%, stable operation throughout the peak harvest season.
- Industrial ultrasonic humidification system: The integrated ultrasonic humidifier produces water droplets of 1-5 microns, ensuring the carrot storage chamber maintains humidity without soaking the surface of the carrots.
- Fire-resistant PIR panel enclosure B1/B2 according to QCVN 06:2022/BXD: Ensuring absolute fire safety for the export processing factory complex.
- T-Light 304 Stainless Steel Cold Storage Door: Manufactured exclusively by Tan Long, the surface is covered with 304 stainless steel, meeting hygiene and safety standards, and features a 4-way heated gasket to prevent limescale buildup.
4. Estimated Price List for Cold Storage in Hai Duong (B2B)
| Capacity | Warehouse volume | Recommended computer configuration | B2B Technical Estimate |
|---|---|---|---|
| Agricultural product warehouse capacity: 20-50 tons | 100 – 250 m³ | Bitzer semi-enclosed unit, humidifier/dehumidifier, 100mm PIR panel, T-Light hinged door. | Detailed cost breakdown based on floor plan. |
| Export warehouse capacity: 100-300 tons | 600 – 1,800 m³ | Screw compressor unit, High-capacity evaporator, 100-125mm PIR panel, Sliding door | Prepare technical design documents and Bill of Quantities (BOQ). |
| Industrial park logistics warehouse with capacity of 500 – 2,000+ tons | 3,000 – 12,000+ m³ | Mycom/Bitzer parallel compression station, Pallet racking system, SCADA Cloud | Turnkey EPC general contractor |
👉 Field technical support: Tan Long engineers are present in Cam Giang, Nam Sach, Kinh Mon, Thanh Ha, and Hai Duong City within the following timeframe: 24 hours.
5. Proof of Tan Long's Practical Project Capabilities
- Automated warehouse general contractor NECS (102,642 pallets) and AJ Total (31,000 pallets).
- HVAC Partner Nutifood Hung Yen, Saigon Food, Vietnam Communist Party.
6. Standard 7-Step EPC Construction Process
- Field survey of factory and substation foundations in Hai Duong.
- Thermodynamic calculations and 3D simulation of the temperature field of the warehouse chamber.
- Prepare a transparent Bill of Quantities (BOQ) and commit to providing genuine equipment with CO/CQ certificates.
- Manufacturing of fire-resistant PIR panel enclosures and T-Light sliding doors at Tan Long factory.
- Transportation and direct installation of complete HVAC systems at the factory.
- Nitrogen pressure testing, vacuuming, gas charging, and acceptance testing followed by a 72-hour chamber cooling test.
- Handover of operations, instruction on safety procedures, and warranty activation are available 24/7.
7. Frequently Asked Questions (FAQ)
1. Will carrots lose weight if stored for 5 months in Tan Long cold storage?
With Tan Long's differential humidification system maintaining humidity at 95% – 98% and large heat exchange area evaporators, the weight loss due to water loss is below 1.5% after 5 months of storage.
2. Does a garlic and onion storage facility need a ventilation and odor removal system?
Yes. Tan Long designed a system of regularly scheduled exhaust fans to remove sulfur gases generated during the storage of onions and garlic, protecting the heat exchanger from corrosion.
Investment in Cold Storage for Carrots & Agricultural Products for Export in Hai Duong
Contact Tan Long Engineers today to receive modern cold storage solutions that maximize the preservation of agricultural products in Hai Duong.
Cold Storage Construction Project in the surrounding areas of the Red River Delta and the Capital City
The most dynamic economic region in Northern Vietnam, encompassing Hanoi, Hai Phong International Port, and a network of high-tech food processing industrial parks. Tan Long's engineering team is ready to conduct on-site surveys and provide technical support within 24 hours.
Engineer Nguyen Toan Thinh (Technical Director)
With over 18 years of practical experience in directing, consulting, designing, and constructing heavy industrial refrigeration systems, ASRS automated warehouses, and IQF freezing systems across more than 29 major national projects.
