Four stroke
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As one of the key parts of diesel engines, inlet/exhaust valve spindles, valve seats and valve guides, must be reliable enough to ensure the smooth operation under the working conditions of high speed, high temperature and high corrosion.
The four - stroke valve spindles, valve seats and valves guides produced by IMS  are designed 100% in accordance with the original standard, including the exhaust valve spindles made of Nimonic material , has been approved by  MAN and YANMAR comany and are suppled for engine builders. IMS is the  the biggest four stroke engine manufacurer with the highest level of manufacturing in China and has reached the first-class level in the world.

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