... friendly and natural color 2.Flag slate from manufacturer 3.Durable and low water absorption 4.Flag slate 1. Flagstone Paving/Paving ... European Countries and USA Every Year of Rusty Slate Panel 3. Application: indoor and outdoor 4.Characters:durable, flexible, high ... compressive, beautiful color, frozen resistant; also the water absorption rate of natural slate is less than 5%.5 ...