[Imported Glycerin Procurement and Supply] Why is glycerin antifreeze so good but not much on the market?

The full name of antifreeze should be called antifreeze coolant, which means it has antifreeze function of coolant. Antifreeze can prevent the coolant from freezing and cracking the radiator and freezing the engine cylinder block or head during cold winter parking. Antifreeze is mainly divided into ethylene glycol-based antifreeze, glycerin-based antifreeze, and alcohol-based antifreeze. At…