Which snow removal is better, calcium chloride or sodium chloride?

Calcium chloride snow melting agent and sodium chloride snow melting agent have the following two advantages: first, corrosion rate: the corrosion rate of calcium chloride snow melting agent is controlled within the allowable range of the country.

Calcium chloride snow melting agent and sodium chloride snow melting agent have the following two advantages: first, corrosion rate: the corrosion rate of calcium chloride snow melting agent is controlled within the allowable range of the country. Compared with sodium chloride snow melting agent, the damage of calcium chloride snow melting agent to the road surface is only about 3% of sodium chloride. Second,Snow melting ability: Calcium chloride is four to five times better than sodium chloride. After sodium chloride in water, the freezing point is-10℃ and calcium chloride is about-20℃.