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The selection should be based on the system's minimum operating temperature; generally, the antifreeze freezing point must be lower than the system's minimum temperature. 5–10℃ to allow for a safety margin. For example, if the equipment operates in a -20℃ environment, products with a freezing point of -25℃ to -30℃ are recommended.
China Climate Zones and Freezing Point Selection Table
Climate Zone | Typical Region | Extreme Minimum Temperature Range | Recommended Freezing Point Grade | Special Scenario Adaptation |
Polar Regions | Heilongjiang, northern Inner Mongolia | -35℃~-50℃ | -50℃~-60℃ | Requires low-temperature starting additives |
Severe Cold Regions | Jilin, Liaoning, northern Xinjiang | -25℃~-35℃ | -40℃~-50℃ | Focus on flowability-improved formulations |
Cold regions | North China, Northwest China, Qinghai-Tibet Plateau | -15℃~-25℃ | -30℃~-40℃ | High-altitude areas require low air resistance formulations |
Cool-warm regions | Central China, northeastern China | -5℃~-15℃ | -25℃~-30℃ | Propylene glycol-based eco-friendly option available |
Warm regions | South China, southwestern China | 0℃~-5℃ | -15℃~-20℃ | Prioritize anti-boil performance (summer) |
Users are advised to provide specific application scenario parameters prior to selection, enabling the technical team to customize solutions.
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