Excellent comprehensive performance, with ozone resistance, high temperature and low temperature resistance, chemical resistance, resistance to a variety of polar solutes, the relative density is small. The disadvantage is that it has a large amount of expansion in general mineral oil and lubricating oil, and is generally a dark product. The use temperature range is -60 ~ +150 ℃, with its excellent comprehensive performance, it is widely recognized in the industry. Can be applied to high temperature, cold, coastal, strong ultraviolet radiation areas and high-rise buildings.