Ukuhlaziywa kwezinzuzo ze-valve yebhola yase-China: isakhiwo esilula, ukubekwa uphawu okuhle nokunye
I-valve yebhola iyimishini yokulawula uketshezi evame ukusetshenziswa, isakhiwo sayo esilula, ukubekwa uphawu okuhle nezinye izinzuzo kuyenza isetshenziswe kabanzi ku-petroleum, amakhemikhali, i-metallurgy, amandla kagesi nezinye izimboni emkhakheni wokulawula uketshezi. Lesi sihloko sizohlaziya izinzuzo zeI-valve yebhola yaseChinangawe ngokombono wochwepheshe.