Qhov kwv yees li ntawm profit npoo ntawm explosion-Proof teeb

Cov nyiaj npoo rau tawg-pov thawj teeb feem ntau ntau yam ntawm 10% Thiab 20%.

Tau mas, Qhov no nyob ntawm tus nqi kawg muag nqe ntawm lub teeb tawg-pov thawj teeb, Raws li txhua yam khoom muaj nws cov nqi. Profits yog ua thaum tus nqi muag tshaj cov nqi. tiam sis, Kev siv zog los penetrate tej ciaj uas muag, muag los yog hauv qab no tej zaum yuav ua rau losses!