==Using range & purpose: It can be fixed on the natural and machanical ventilated devices on the hypaethral decks of all sorts.
==Operation Standards: Technical conditions of ventilators' manufalture, experiment and check-accept accord with GB/T295-2000.
==Features: Au types of ventilated canisters above have the following features reasonable structure covenient on-off, beauthful shapes, au ready types, good aeration, reliable obturation. They can satisfy the wide needs of the shipping industry.
==Marks: The mark of the ventilated cansiter cohose DN=500 is ventilated cansiter C500 CB/T295-2000.