What small hydropower biogas solar water heater is the first in the world?

Huang Ming solar water heater. Himin Solar is a well-known trademark in China, ranking first in the world in the field of solar water heaters, a top 500 value brand in China, a member of the International Solar Energy Association and a famous brand in China. Huang Ming Solar Energy Co., Ltd. has done quite well in the solar water heater industry. With 2 15 national patents, it is in a leading position in the world solar energy industry.