WEFTEC, Bungwe la Water Environmental Technical Exhibition and Conference, ndilo msonkhano waukulu kwambiri wamtundu umenewu ku North America ndipo umapereka akatswiri masauzande ambiri odziwa bwino madzi ochokera padziko lonse lapansi maphunziro apamwamba a madzi ndi maphunziro omwe alipo lero.Zomwe zimadziwikanso ngati chiwonetsero chachikulu kwambiri padziko lonse lapansi chamtundu wamadzi padziko lonse lapansi, chiwonetsero chachikulu cha WEFTEC chimapereka mwayi wosayerekezeka waukadaulo ndi ntchito zotsogola kwambiri.
Nthawi yotumiza: Aug-14-2013