Atụmanya ahịa valvụ bọọlụ ụwa na nyocha miri emi nke ndị isi egwuregwu, dị ka Swagelok Company (USA), MRC Global Inc. (USA), Astech Valve Co. Ltd. (Taiwan), Cameron International Corporation (USA), wdg.
Ntụle asọmpi a na-eme na akụkọ valvụ bọọlụ a na-enye gị ohere ịmata omume nke ndị isi egwuregwu n'ahịa, dị ka mwepụta ngwaahịa ọhụrụ, mgbasawanye, nkwekọrịta, nkwonkwo, mmekorita, na nnweta. Ụzọ nyocha isi nke th...
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