The software of bellows hose and finned bellows in the inner combustion motor cooler, install 1 to 1000 metal bellows with discontinuous convex and concave condition in the cooler shell of the diesel engine or [[
https://www.labideal.com/product-category/vacuum-components/vacuum-pumps/rotary-vacuum-pumps/ Rotary Vacuum Pumps]] among the two tube plates of the.