Advantage of concrete block 1. Use construction waste or industry waste, save energy. 2. Raw material can be got easily 3. Protect environment 4. High tensile strength , Not afraid of water, resistance to weathering, corrosion, freezing and thawing Related standard for the concrete block National standard 240*115*53 mm(other special size can be made according to customer's requirement) Weight:2.5-3kg/pc (the weight will be different because of different raw material) Compressive strength:7.25Mpa-19.6Mpa