Natural Refrigerants
Ammonia (NH3) has zero ODP, zero GWP, and the highest efficiency in industrial cooling. CO2 (R744) has a GWP of 1 and strong low temperature performance. Both avoid EU F-gas phase down risks.
Sustainability
Square builds energy saving freezers, natural refrigerant compressor skids, and thick PIR panels to cut power use and carbon emissions in food plants.
Environmental Commitment
Built for a Low Carbon Cold Chain
Freezing and refrigeration use a major share of energy in food plants. We cut power consumption through natural refrigerants, heat recovery, Hennecke PIR insulation, and efficient fan control.
Energy Efficiency
We optimize coil fin spacing, defrost timing, airflow balance, and compressor staging to deliver more cooling per kilowatt of power.
PIR Insulation Technology
PIR foam insulates far better per millimeter than standard PUR, cutting cold room heat gain and compressor running hours.
Heat Recovery
Our heat recovery systems capture compressor waste heat to produce hot water for washdown, space heating, or process preheating.
Equipment Longevity
Building core stainless steel structures and pressure vessels in our own plants gives our equipment a 20 to 25 year service life.
GWP Compliant Portfolio
Our full equipment range meets EU F-gas rules and global refrigerant standards, protecting your plant investment for decades.
Refrigerant Comparison
Environmental Impact by Refrigerant Choice
Choosing the right refrigerant is the biggest energy and environmental decision in freezer design.
NH₃ (Ammonia)
GWP
0
ODP
0
COP (relative)
Highest
F-gas regulated
No
Best for
Large industrial plants
COâ‚‚ (R744)
GWP
1
ODP
0
COP (relative)
Medium to High
F-gas regulated
No
Best for
Low temp / NH3 and CO2 cascade
Fluorinated Refrigerants (HFCs/HFOs)
GWP
600 to 4,000
ODP
0
COP (relative)
Medium
F-gas regulated
Yes (subject to phase down)
Best for
Legacy retrofits / small DX
ESG Approach
Environmental, Social & Governance
As a Shanghai Stock Exchange listed company (603339.SS), Square Technology Group publishes annual ESG reports.
Environmental
Natural refrigerants (NH3 and CO2), waste heat recovery, pentane blown PIR panels, and F-gas compliant designs.
Social
Over 1,800 employees working under ISO 45001 health and safety rules with regular technical training.
Governance
Shanghai Stock Exchange corporate governance, audited financial reporting, and unified quality control across six subsidiaries.
Cut Energy Use in Your Plant
Upgrade your line with natural refrigerants and heat recovery. Contact our engineers today.
