light weight,good stability and anti-corrosion,good plasticity,small transfiguration,non-polluting,innocuous, ... character of high intenstity,light weight,good stability and anti-corrosion,good plasticity,small transfiguration,non-polluting,innocuous,insulating ... ,strong fire-retardant,long lifetime(up to-50-100years).The thickness,intensity and oxidative coating ...