Ndi kusintha kwa sayansi ndi ukadaulo komanso kufunafuna kwa anthu moyo wapamwamba, zida zikukula kuti ziphatikizidwe pazinthu zambiri. Nsalu zokhala ndi zitsulo zopangidwa ndi zitsulo zimaphatikiza kusungirako kutentha, antibacterial, anti-virus, anti-static ndi ntchito zina, ndi ...
Werengani zambiri