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About Us
Zhejiang Heli Refrigeration Equipment Co., Ltd.
Zhejiang Heli Refrigeration Equipment Co., Ltd. is China ULT Freezer -80 ℃ (Horizontal) Manufacturer and Sale ULT Freezer -80 ℃ (Horizontal) Factory. As one of the early domestic players in ultra-low temperature refrigeration, Heli integrates R&D, manufacturing, sales, engineering, and after-sales services. The company employs 150 people, including nearly 50 in R&D and engineering, and operates a 25,000 m² facility with dedicated R&D, testing, and production lines. Driven by innovation and independent R&D, Heli has achieved over 60 technological breakthroughs and holds 40+ patents. It has also participated in key municipal science projects and contributed to national and industry standards. Heli’s product lines cover biomedical storage, lab instruments, aquatic deep-cold kitchen equipment, cold chain logistics, quick freezing systems, industrial environmental solutions, household refrigeration, and smart retail. Its solutions are widely used across biotech, research, marine, cold chain, healthcare, and consumer sectors.
Our Expert Team
Factory Tour

Zhejiang Heli Refrigeration Equipment Co., Ltd. owns a 25,000-square-meter modern industrial park, featuring a scientific layout and comprehensive functions. The company has established a full-chain industrial system covering technological R&D to finished product inspection, which provides a solid guarantee for the high-quality production of ultra-low temperature refrigeration equipment.

Advantage
  • High quality raw materials
    High quality raw materials

    We use high-quality raw materials, which are reliable and durable in quality.

  • OEM/ODM
    OEM/ODM

    We have a professional R&D team that can design products according to different needs.

  • Rich experience
    Rich experience

    We have a professional technical team that can improve the process based on the different characteristics of the products to extend their service life.

  • Quality inspection
    Quality inspection

    The quality inspection room is equipped with advanced quality inspection devices. Before each refrigerator is dispatched, it needs to undergo various tests to ensure its stability and reliability.

PRODUCTION PROCESS
process
FAQ
  • Q. 1. What is a cryogenic medical refrigerator?

    A cryogenic medical refrigerator is a specialized refrigeration unit designed to preserve biological samples, vaccines, pharmaceutical products, and medical materials at ultra-low temperatures. These units ensure product stability, prevent degradation, and maintain the integrity of sensitive samples over long periods.

  • Q. 2. What temperature ranges do your refrigerators cover?

    Our product line includes models with various temperature capabilities:
    •Pharmaceutical refrigerators: +2°C to +8°C
    •Low-temperature freezers: down to –45°C or –60°C
    •Ultra-low temperature freezers: –86°C
    •Cryogenic freezers: as low as –150°C

  • Q. 3. What safety and quality certifications do your refrigerators have?

    Our products are manufactured in accordance with international standards and can be supplied with certifications such as FDA CE, ISO 13485, and ISO 9001. Each unit undergoes rigorous performance testing, quality inspection, and temperature calibration before delivery.

  • Q. 4. How do you ensure temperature accuracy and reliability?

    Each model is equipped with a high-precision digital temperature control system, real-time monitoring sensors, and audible/visual alarm functions to detect temperature deviations. Optional data logging and remote monitoring systems are available for enhanced safety and traceability.

  • Q. 5. Can the refrigerators be customized to meet specific requirements?

    Yes. We offer customization options for capacity, interior configuration, voltage, and monitoring systems. Custom branding, data interfaces, and alternative refrigerants (environmentally friendly options) can also be provided upon request.

  • Q. 6. Do you provide international shipping and after-sales service?

    Yes. We export globally and work with logistics partners experienced in handling precision laboratory equipment. Our technical team provides remote support, spare parts, and professional guidance for installation and maintenance.

  • Q. 7. What are the maintenance requirements for cryogenic refrigerators?

    Routine maintenance includes cleaning condenser filters, verifying temperature uniformity, and periodically checking door seals. Our after-sales team can provide maintenance guidelines and technical training for your staff to ensure optimal performance and longevity.

  • Q. 8. How can I choose the right model for my application?

    Our sales engineers will assist you in evaluating your storage requirements — such as temperature range, sample volume, installation space, and power configuration — to recommend the most suitable model for your application.

  • Q. 9. Do you work with distributors or OEM partners?

    Yes. We welcome collaboration with qualified distributors and OEM partners worldwide. We provide full technical support, marketing materials, and training to help our partners serve their markets effectively.

Certificate Of Honor
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News
Industry Knowledge Exhibition

Minus 80 Degree Celsius Horizontal ULT Freezer's High-Performance Insulation

Ultra-Low Temperature (ULT) freezers, especially those operating at temperatures as low as -80°C, are critical in a range of industries such as pharmaceuticals, biotechnology, medical research, and food preservation. Among these, the horizontal configuration ULT freezers offer a unique set of advantages, particularly when it comes to high-performance insulation. The role of insulation in these units cannot be overstated, as it directly impacts the freezer's efficiency, energy consumption, and ability to maintain stable temperatures.

The core function of insulation in ULT freezers is to minimize the transfer of heat from the external environment into the interior. Given that these freezers operate at such low temperatures, even small temperature fluctuations can have significant effects on the stored materials, which may include vaccines, biological samples, and enzymes. To ensure stability, ULT freezers incorporate high-density insulating materials such as polyurethane foam or polystyrene, which have low thermal conductivity and insulating properties.

One of the key benefits of high-performance insulation is energy efficiency. High-density foam insulation helps maintain the internal temperature by reducing the need for the compressor to run continuously. By lowering the frequency of compressor cycles, the freezer consumes less energy, thus minimizing operational costs over time. Additionally, advanced insulation materials help stabilize the internal temperature, ensuring that any fluctuations are kept to a minimum, which is critical for preserving the integrity of sensitive materials.

The high-performance insulation also contributes to the freezer's reliability. In environments where ULT freezers are frequently accessed, such as laboratories or medical facilities, the freezer must be able to maintain its cooling capacity even during door openings. The advanced insulation in horizontal ULT freezers helps mitigate the loss of cold air during these brief periods, ensuring that the freezer continues to operate efficiently.

Choice of Ultra Low Temperature Deep Freezer

Selecting the right Ultra-Low Temperature (ULT) deep freezer requires a detailed evaluation of several factors, given the specialized nature of these units. ULT freezers, typically operating at temperatures between -40°C and -86°C, are indispensable in industries that require precise temperature control, such as pharmaceuticals, biotechnology, and research institutions. However, the process of choosing an appropriate ULT deep freezer must be approached with careful consideration to ensure it meets the specific needs of the application.

One of the factors to consider is the temperature range. ULT deep freezers are available in various models that cater to different temperature needs. For example, some models are designed to maintain temperatures as low as -40°C, while others are capable of reaching -86°C or even -150°C for more sensitive applications. It is essential to identify the required temperature range based on the materials to be stored. For instance, biological samples and vaccines might require storage at -80°C or lower to ensure their preservation. Ensuring that the chosen freezer can reliably reach and maintain the necessary temperature is critical to the success of the operation.

Another important consideration is the storage capacity. ULT deep freezers come in different sizes, with varying internal capacities. Some are designed for small-scale applications, ideal for research labs or pharmacies that need to store a limited number of samples, while others are built for large-scale operations such as biorepositories or industrial use. The size of the freezer should align with the expected storage needs, taking into account factors such as available space, volume of stored materials, and the frequency of freezer access.

Energy efficiency is also an essential consideration when choosing an ultra-low temperature deep freezer. As these units operate continuously and require significant cooling power, selecting a model that optimizes energy consumption can result in long-term cost savings. Look for ULT freezers that feature energy-efficient compressors, advanced insulation materials, and intelligent temperature control systems. Some models also incorporate eco-friendly refrigerants, which can help reduce environmental impact.

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