red dyed color sand 1 technic: natural or artifical 2 material: High quality natural stone 3 color :more red dyed color sand Feature 1. feature: durable, waterproof, antiseptic non-toxicity ,high bonding strength, odourless, landscaping, good for health, etc. 2. color: grey,yellow ,blue, green, red ,pink ,and so on 3. size(mesh):5-10 10-20 20-40 40-80 80-120 0.3-1mm 1-3mm 2-4mm and so o 4 . ...