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HB SDD Vaccine Refrigerator in Sino-German DC100 Leading Cases
At the recently concluded 2025 Qingdao Forum on International Standardization, Haier Biomedical's "Application of Solar Direct Drive (SDD) Vaccine Refrigerator" was recognized as a "Sino-German DC100" Leading Case of Direct-Current Application by the China DC ALLIANCE (CDCA).
This recognition affirms not only Haier Biomedical's leadership in direct current (DC) technology applications, but also its long-standing dedication to global public health. By driving innovation in standardization, the company is playing a key role in leading industry development to advance health equity and accessibility worldwide.
The refrigerator has previously received several prestigious honors, including the China Excellent Patent Award, the China Grand Award for Industry, and the First Prize in Shangdong Provincial Science and Technology Progress Award. It has also been certified as reaching an internationally leading level of innovation.
As a high-profile and major international event in the field of standardization, the 2025 Qingdao Forum on International Standardization unveiled the first batch of "Sino-German DC100" Leading Cases of Direct-Current Application, showcasing international benchmarks with industry foresight, breakthrough technologies, and large-scale potential to accelerate standardization of key technologies in fields such as new energy and DC power distribution.
Haier Biomedical's "Application of SSD Vaccine Refrigerator" stood out even among the selected cases. Let's explore why!
01 Power Shortages Leave 1 Billion Without Immunization Access—Here's the Solution
According to World Bank statistics, nearly 1 billion people across Africa, Asia, and the Americas live in areas plagued by power shortages. In such regions, conventional AC-powered vaccine cold chain systems often fail, unable to function. As a result, up to 20% of vaccines are lost to cold chain failures, and childhood immunization rates remain below 5%, posing a serious risk to local public health.
To address this issue and promote equitable access to immunization worldwide, Haier Biomedical has innovated its SSD Vaccine Refrigerator, combining solar-powered DC refrigeration, cold storage, and precise temperature control to deliver China's solution, which helps close the immunization gap in power-deficient areas around the world.
02 Three Original Technologies Address Pain Points of Safe Vaccine Cold Chain Storage
● Unstable power supply or insufficient cooling?
Direct-Drive DC refrigeration ensures steady performance.
An innovative solar-powered system drives an efficient DC compressor, converting intermittent solar energy into a stable supply of cooling. This eliminates reliance on large-capacity batteries and ensures consistent 2ºC to 8ºC refrigeration for vaccines and medicines, even in areas with frequent power outages.
● Extreme weather threatening vaccine stability?
Heat pipe and cold storage keeps temperature condition rock-solid.
An innovative high-density immersion cold storage module, combined with a gravity-driven heat pipe system, delivers rapid cooling and precise temperature control. With ultra-long-lasting thermal insulation performance, this solution keeps vaccines safe and temperature-stable even under extreme weather conditions across diverse environments.
● Broad ambient temperatures difficult to manage?
Phase change energy storage keeps cooling stable, even without power.
A dual-function constant-temperature phase change energy storage system has been developed to provide both heating and cooling. Designed to operate across a broad ambient temperature range from 5°C to 43°C, it supports stable performance in all climate zones, effectively addressing limitations in the applicability of traditional solutions.
● Battery lifespan a concern? Solar-powered system delivers 10+ years of use. By powering both control and display modules with solar power, the system eliminates battery-related limitations, extending the product's service life to over 10 years, and ensuring long-term, reliable operation in remote and off-grid environments. 03 Beyond Vaccination—A Global Health Ecosystem for All Today, Haier Biomedical's SSD Vaccine Refrigerator has been introduced in more than 80 countries and regions participating in the Belt and Road Initiative. In areas with limited access to electricity, it has helped reduce vaccine loss due to cold chain failures to under 2% and raised childhood immunization rates from less than 5% to over 80%. Each year, the system safeguards the vaccination of more than 45 million children, contributing significantly to global child health protection. Looking ahead, Haier Biomedical will expand its collaboration with international organizations such as the World Health Organization (WHO) and United Nations Children's Fund (UNICEF), aiming to incorporate advanced technologies like the IoT and AI to equip regions such as Africa with a "smart brain" for vaccine management. This will enable full traceability and accountability for each dose administered, supporting equitable and accessible immunization for all.
