I can tell you with absolute certainty, no. If you're going solar yourself, you might consider the high-end Huangming, or the more heavy-duty Linuo or Sanle. They are all excellent brands in terms of thermal insulation and heat absorption of vacuum tubes, especially with after-sales guarantees. I hope this helps you.
And Sanno Solar?
Introduction Sannuo Solar Energy can tell you for sure, no. If you're going solar yourself, you might consider the high-end Huangming, or the more heavy-duty Linuo or Sanle. These are all products