Complex sentence: If solar kettles use solar vacuum tubes technologies, the vacuum insulating properties will keep previously heated water hot throughout the night e.g. the SK-TF, or the SunRocket Solar Kettle.
Split into simpler sentences: If solar kettles use solar vacuum tubes technologies, the vacuum insulating properties will keep previously heated water hot throughout the night. Examples are the SK-TF, or the SunRocket Solar Kettle.