... 1211.This fire-extinguisher agent boast of the characteristics of high performance, little pollution , sound insulation and efficiency, it can put ... leftover, such as in the sites of nonrenewable resources, like electrical ,communication,metallurgy, electric power, petroleum, chemical,culture heritage and finance ... ≤0.003Mass fraction of evaporated residue % ≤0.01 ≤0.01 high quality R236fa