In 2011, the well assistance project in Senegal was completed for the first time. In this project, our company provided stainless steel wire wrapped screen and casing pipe with OD114mm for sand filtration in the well, this stainless stee screen is made of v shape profile wire wrapped, the slot is not easily to be blocked by gravel and the slot size can be customarized according to operating requirment. This assistance project was completed in cooperation with CGCINT. It solve the problem for local people drinking water.