Tšebeliso ea Titanium Alloy indastering ea li-valve
Titanium alloy e na le melemo e mengata joalo ka letsoalo le tlase, matla a phahameng, ho hanyetsa kutu, mocheso o phahameng le ho hanyetsa mocheso o tlase, 'me e ka sebelisoa haholo libakeng tse ngata joalo ka petroleum...
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