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About Us
Zhejiang Heli Refrigeration Equipment Co., Ltd.
Zhejiang Heli Refrigeration Equipment Co., Ltd. is China ULT Freezer -86 ℃ (Vertical/Horizontal) Manufacturer and Sale ULT Freezer -86 ℃ (Vertical/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.
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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
  • 3C
    3C
  • 13485
    13485
  • CE
    CE
  • ETL
    ETL
  • FDA
    FDA
  • ISO9001
    ISO9001
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Industry Knowledge Exhibition

Comparison of -86℃ Vertical/Horizontal ULT Freezer

The choice between vertical and horizontal -86℃ ULT freezers largely depends on space, accessibility, and storage capacity. While both units are designed to achieve the same ultra-low temperatures, their design and layout differ, offering unique benefits.

Space and Storage Capacity:

Vertical ULT Freezers: Vertical freezers are generally designed with upright storage compartments, similar to conventional refrigerators. They offer a more compact and space-efficient design, making them ideal for laboratories with limited floor space. Vertical units are typically favored in environments where space is at a premium, such as small laboratories or medical facilities.

Horizontal ULT Freezers: Horizontal freezers, on the other hand, tend to have a chest-like design, providing a larger storage volume. They are typically more spacious than vertical freezers and can hold a greater number of samples or materials. Horizontal freezers are often used in larger facilities or for bulk storage, where storage capacity is the priority.

Energy Efficiency:

Vertical ULT Freezers: The design of vertical freezers allows for better insulation and more efficient cooling in smaller spaces. Since vertical units are often more compact, they can achieve lower temperatures faster and maintain them with less energy. The energy consumption, however, may increase if the freezer is accessed frequently, as the larger door openings can allow for more cold air loss.

Horizontal ULT Freezers: Horizontal freezers tend to be less energy-efficient compared to vertical ones because of their larger internal volume. They often require more energy to maintain the -86℃ temperature over larger storage areas. However, many horizontal units are equipped with advanced insulation and cooling systems to minimize energy consumption.

Introduction to the Features of Benchtop Ultra-Low Freezer

Benchtop ultra-low freezers are compact refrigeration systems designed for laboratories and medical environments where space efficiency, portability, and precise temperature control are essential. These freezers are typically used for storing small quantities of highly sensitive materials, such as reagents, enzymes, and biological samples, at ultra-low temperatures (usually -40℃ to -86℃). Despite their smaller size compared to traditional freezers, benchtop ultra-low freezers provide many of the same high-performance features and technologies.

Compact Design:

Benchtop ULT freezers are designed with space constraints in mind, offering a compact and space-efficient storage solution for laboratories with limited bench or floor space. Their small footprint allows them to fit easily on laboratory countertops, enabling researchers and lab technicians to store temperature-sensitive materials close at hand for easy access. This feature is particularly beneficial for environments where mobility and quick retrieval of samples are critical.

Energy Efficiency:

Benchtop ULT freezers are engineered to be energy-efficient while maintaining ultra-low temperatures. Despite their smaller size, these units are designed to minimize energy consumption through the use of high-quality insulation and advanced refrigeration technologies. Many models incorporate variable-speed compressors and energy-saving features, such as programmable defrost cycles, which optimize energy use while maintaining the required temperature stability.

Advanced Temperature Control and Monitoring:

Temperature control and monitoring are crucial for benchtop ultra-low freezers, as even small fluctuations in temperature can jeopardize the integrity of stored materials. Many benchtop ULT freezers come equipped with precise digital temperature controls, allowing users to set and maintain the desired temperature with high accuracy. In addition, they often feature built-in temperature alarms and remote monitoring systems to alert users of any temperature deviations or system malfunctions, ensuring the safety of valuable samples.

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