Aag muhiim ah oo arji ah oo mesh bir ah oo bir ah, waa warshadaha petrochemical, noocaan ah ee mesh-ka-xidhka birta ah waa shay heer sare ah oo tayo sare leh, kaas oo aad muhiim u ah in la siiyo waxyaabaha daawaha cayriin, saxnaanta mesh micron iyo silig jaban ama baabi'inta silig labanlaab ah.