These are made from the raw materials of kaolin, feldspar, quartz and color agent through firing in a high temperature.LECA is a
round sphere, solid particles, the shape of different technology and different.Its surface is a hard shell,
this shell is ceramic or enamel, washing does not lose color,
giving the ceramsite high strength.It has the function of water insulation,environmental protection, water permeability and
reusable.