Not expensive. 250L is fine. When buying solar energy, you can’t just focus on the number. It should depend on the capacity and whether the temperature of the hot water produced is high. The 250L that Yijia can say refers to the water coming out of the nozzle. Some solar energy refers to the total capacity, and Yijia can use patented interference film technology. , the vacuum degree of the vacuum tube has reached 5*10-4Pa. Currently, only Yijia Neng and Sun Rain have reached this vacuum degree. The heat collection effect of YijiaNeng's 15-tube tubes is comparable to that of ordinary brands of 20-tube tubes. There are two reasons for this. First, the heat collection effect of the 18-branch solar tubes in general is equivalent to that of the 15-branch tubes of YijiaNeng (you may want to check it out. The capacity of the 15-branch tubes of YijiaNeng is equal to the capacity of the 18-branch tubes of the general brand). The other aspect is the heat dissipation of the vacuum tubes. Vacuum tubes dissipate more heat than billions of dollars, and 18 tubes dissipate heat faster than 15 tubes. So there is nothing wrong with choosing Yijia. Believe in yourself and believe in Yijia’s abilities. Solar energy is a system, so you have to look not only at the host, but also at the condition of the pipelines. You won’t regret it after checking out Yijianeng’s pipeline accessories. You must choose carefully. Maybe I prefer Yijia Neng, but I hope you can compare several more before choosing. I think Yijia can do the best
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