Whether it increases or not is linked to the weather, i.e. the intensity of sunlight. It's not clear specifically why you said it can't increase. I think so if the lighting conditions are good. like other brands, the basics will be the same. If the water temperature is the same and the time is the same, there will be no difference. I used solar power from Tsinghua Unisplendour, which is very cost-effective. no substantial difference between any brand of solar power. It mainly depends on the after-sales service and service of the local dealer.
Dear boss, I am a customer who used Tsinghua Sunshine Solar Energy. I have been using it for 5 years, I think this product is not easy to sell and it is better to buy other products. It's hard to describe how tortured I am. Since I bought it, the E8 has appeared frequently or daily, andwater meter coils are even more powerful. I have replaced 2 water meters and 5 coils when the water is on. turned on, plug it in and unplug it. Now I can no longer bear the expense and torture, and I prefer not to use them. It's pitiful!