国产夫妻精品视频久久久|久久国产精品久久精品国产美女|亚洲第一国产毛片久久久|亚洲国产成人av毛片国产

Electronic heat transfer cement has good heat transfer, high insulating, and high temperature no oil, no dryness, no solidification, no melting, odorless non-toxic, no corrosion material, high low temperature, water resistant, ozone, weather resistant , Good thixotropism, moderate consistency, easy to use, with plastic surgery, reducing air between the heat source and the heat sink, so the versatility is particularly strong, more useful for some irregular heat sources, particularly useful.