Japanese version is here .
A great number of basic environmental preservation techniques are believed to have accumulated on manufacturing and construction sites over the years. These techniques contain many valuable ideas based on ingenuity and improvement implemented on site. Transfer of environmental preservation technology to the developing countries has often focused on the transfer of sophisticated environmental preservation techniques from industrially advanced countries. However, basic techniques are considered to be more readily acceptable and to take root in the receiving countries. The survey was conducted in this context to achieve the objectives listed below.