EXPANDAG is a safe, controllable and highly expansive demolition agent, replacing the traditional dynamite and saw, which can be applied to granite and marble quarrying, mining, concrete cutting, concrete demolition, rock breaking and so on. EXPANDAG is a kind of expansive chemical product, which is designed to instead traditional dynamite, it works with non-explosive and soundless, even no vibration,which is popular in the international quarrying and demolishing market. When it is mixed with clean and cold water to be mortar and poured into pre-drilling holes of rock and concrete, it swells and exerts expansive capabilities on the hole-wall at a unit value of more than 50Mpa (500kg/cm2 .) which is strong enough to cut and crack reinforced concrete, marble and granite after a certain period.