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6974 solar controller board products are offered for sale by suppliers on Alibaba.com, of which pcba accounts for 18%, solar inverters accounts for 5%, and wind turbine inverter accounts for 1%. A wide variety of solar controller board options are available to you, such as solar system, solar home system and electronic device.You can also choose from pure sine wave, 3 phase and three phase solar controller board,as well as from factory, odm, and oem/odm solar controller board,And whether solar controller board is mppt, {2}, or {3}.