Expanded clay is a high quality, durable lightweight aggregate, that has been used for over half a century. The main characteristic of expanded clay is low density combined with high strength. In addition, the aggregate holds many other important characteristics, and it can be described as an “all-in-one” product, providing a huge range of properties vital for sustainable construction. #sỏi nhẹ# sỏi trồng lan# sỏi nhẹ leca# đất nung#viên đất nung trồng lan#