PSI na-enye ọrụ zuru ụwa ọnụ na nchekwa nchekwa ọha, nyocha, nyocha, agụmakwụkwọ na ọzụzụ. Iji netwọk zuru ụwa ọnụ nke ndị ọkachamara ọkachamara anyị nwere ike ịrụ ọrụ iji hụ na nzaghachi dị irè maka ihe ịma aka nchekwa ọha nke echi site na njikwa ọdachi gaa na nnapụta teknụzụ.
GỤKWUO