Hello, I will answer your question from four aspects
:
1: Thermal insulation walls are not nonsense, they are genuine. I compared my neighbor's water temperature with that of his ordinary brand. When I woke up early in the morning, my water temperature was higher than his. When there is no sun, my water temperature can be maintained for several days, but his water temperature cannot be maintained for two days.
Two: A family of three can use a 16-pack, the capacity is 150 liters. My family of four only uses 16 tubes, and the hot water is more than enough. Whether you buy one that is too big depends on the economic basis and actual usage. There are many tubes and a large capacity, but the heating speed is still the same.
Three: When buying solar energy, you still have to look at the brand. Famous brands have the advantages of famous brands: good quality, guaranteed after-sales service, and safe use. No-name brands are cheap, but it makes people worry. This brand is still there this year, but it will evaporate next year. It's broken and I can't find anyone to fix it.
Four: Plum rain in the south is easy to corrode. It is recommended that you buy thick brackets that have been hot-dip galvanized and painted. This is more durable.
It is recommended that you buy 16 tubes of Sun Rain. Our price is about 2,600. Huang Ming is also good, but the price is too high. So I only buy the right ones, not the expensive ones. Famous brands include Tsinghua Sunshine, Liruorite, Four Seasons Muge, etc., but I think they are not as good as Taiyangyu.
For reference only, you have to make your own decisions when buying things.