What is the material and material ratio of lawn brick and grass planting brick?

Lawn brick: Grass planting brick is made of high-quality materials such as concrete, river sand and pigment, and is pressed by high-pressure brick press.

Materials: concrete, river sand, pigment.

Proportion: the weight ratio of cement and sand is 1: 2.5.

Common colors are green, black and white, and other colors can be customized. Anti-aging, anti-corrosion, reusable.