Moetsi oa li-valve tsa China Tlhahlobo ea lihlahisoa: Litšobotsi tsa boleng bo phahameng ba li-valve li etsa hore u utloisise!
Ball valve e le lisebelisoa tse tloaelehileng tsa valve, e sebelisoa haholo liindastering tse sa tšoaneng. Joale, litšobotsi tsa li-valve tsa boleng bo holimo ke life? Sengoliloeng sena se tla sekaseka lihlahisoa tsa baetsi ba li-valve tsa bolo ea Machaena bakeng sa hau, 'me se u ise ho utloisisa chara...
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