Injani ikhwalithi yevalve uvemvane waseShayina? Vakashela abakhiqizi be-butterfly VALVE basekhaya abaziwayo NJENGAVALE
Embonini ye-valve yaseChina, i-valve ye-butterfly isetshenziswa kakhulu ku-petroleum, amakhemikhali, i-metallurgy, amandla kagesi nakweminye imikhakha yezimboni ngenxa yesakhiwo sayo esilula, ukusebenza okulula nokusebenza kahle kokuvala uphawu. Phakathi kwazo, NJENGEVALE, njenge-well-kno...
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