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In combination with its role in respiration and the maintenance from the strain gradient involving the thoracic and abdominal cavities, the diaphragm has a number of other functions.Bơm trục vít Roto Bơm định lượng trục vít Bơm hóa chất argal bơm hóa chất cheonsei Bơm hóa chất Sandpiper Bơm hóa chất Panworld Bơm hóa