Ukuthuthukiswa kwemboni yama-valve akunakuhlukaniswa nokuphathwa kwekhwalithi
Ukuthuthukiswa kwemboni yama-valve akuhlukaniseki ekuphathweni kwekhwalithi Ama-valve ayimishini yokulawula uketshezi oludingekayo ku-petroleum, amakhemikhali, esiteshini samandla kagesi, e-metallurgy nakwezinye izimboni. Ngokudlondlobala kokuhwebelana kwezomnotho, amakhasimende anezinga eliphezulu...
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