Kodi ma RO membranes amatha kusefa chiyani?
Nembanemba ya RO ili ndi luso losefera kwambiri, lochotsa bwino: ma ayoni achitsulo cholemera: monga lead, mercury, cadmium, chromium, ndi zina zotero, zomwe zimaika pachiwopsezo chachikulu pa thanzi la anthu.
tsatanetsatane wa mawonekedwe