Ruifbier Labotary ikuchita zoyeserera zamphamvu yolumikizira tepi yolumikizana ndi pepala molingana ndi njira ya ASTM strand.
Tapeza kuti kumatira ndi kulumikiza mitengo ya mapepala okhala ndi malo opukutidwa ndi abwino kwambiri kuposa momwe zimakhalira.
Nthawi yotumiza: Dec-22-2022