... soli hardened Slightly hardenedSmall effect Improving alkaline soli Effect on undergroud waterSodium increases, adverse to human body,such ... to human body,such as: hypertensionCalcium increases,smaller impact on human body Magnesium increases, benefit to human bodyMagnesium ... )190 85922Application: a railroad crossing, railway switch port, rails and high iron on both sides of the subgrade, etc. It ...