抄録
We introduce about development of a solar still in practical use, which has been done in cooperation between a venture company "topecology" and university of the Rryukyus. The solar still was newly designed, and it was found that the still has great productivity in the outdoor experiments in the university. But there are many problems in the development of the products to the market, and we have solved the problems by trial and error. Until now, the company has sold about 20 stills to the Indonesian government. The business has just begun, and the venture company continues its challenge.
