NJENGE-valve: Umholi wabahlinzeki be-valve yebhola baseChina
Ngokuthuthuka okusheshayo kwenkundla yezimboni, ama-valve ebhola asetshenziswa kabanzi ku-petroleum, amakhemikhali, igesi yemvelo nakwezinye izimboni. Ngakho-ke, kubaluleke kakhulu ukukhetha umphakeli omuhle wama-valve webhola waseShayina. Lesi sihloko sizokwethula i-LI...
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