Professional & Premium
We are globally recognized manufacturer and turnkey engineering provider of premium refrigeration systems. To deliver green, highly efficient cooling solutions to clients worldwide.
Comprehensive Products
Every system we build is driven by industry-leading compressors, Mastery of extreme deep freezing and smart energy optimization.
Customized Industries
Our robust refrigeration systems are silently powering some of the most demanding applications across the globe.
Service & Support
We provide a true closed-loop service—from your initial P&ID drawing to final commissioning and we are your lifelong technical partners.
Professional Team
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Expanding Globally
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Certificates and Awards
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make high quality assurance, produce accurately and control costs effectively
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Engineering Excellence Since 1999 | Your Turnkey Partner for Industrial & Commercial Refrigeration
We look forward to your becoming our next customer.
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update and release product and industry knowledges
Cold storage unit installation precautions and accessory selection
I. Unit Installation Precautions 1. The unit has been charged with dry nitrogen. Please check before connecting to the system. The unit should use a dedicated power supply and should not share power with other electrical equipment.2. The grounding bolt is located next to ...
Common component functions and basic faults of refrigeration units
The cold storage refrigeration system is a compression refrigeration system. Through four main processes—compression, condensation, throttling, and evaporation—of the refrigerant cycle, heat is transferred from the inside of the cold storage to the external environment, ensur ...
Reference for common faults in the operation and maintenance of refrigeration units
This article mainly explains issues related to liquid return, liquid-carrying start-up, oil return, the influence of evaporation and gas return parameters, exhaust-related parameters and liquid slugging prevention, as well as precautions for adding refrigerant, for your refer ...
Screw chiller unit maintenance and troubleshooting
1. Maintenance and Upkeep Screw-type water-cooled chiller units typically have an operating time of approximately 3000 hours per year (based on my country's climate and geographical conditions). To ensure the long-term safe and reliable operation of the unit, extend its serv ...
Your Turnkey Partner for Industrial & Commercial Refrigeration
Established in 1999 in Shanghai, Shanghai Double Penguin Refrigeration Co., Ltd. is a premier assembly factory and turnkey solution provider of industrial and commercial refrigeration systems. With decades of engineering expertise, we specialize in designing, integrating, and assembling high-performance condensing units, multi-compressor parallel racks, and complex deep-freezing systems. Our mission is simple: to deliver reliable, energy-efficient, and zero-downtime cooling solutions to clients worldwide.
Our Comprehensive Product Portfolio
Our systems are at work in demanding applications worldwide:
Mega Cold Chain Logistics: High-capacity multi-compressor racks for multi-temperature warehousing hubs.
Pharmaceuticals & Medical: 100% active/standby redundant systems safeguarding vaccines, biologics, and medical supplies.
Food Processing & Staging: Distributed cooling networks for slaughterhouses, aging rooms, and blast freezers.
Aerospace & Precision Manufacturing: Ultra-stable temperature control for critical materials and processes.
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