The 气缸盖 is mounted on top of the cylinder block, sealing the cylinder from above and forming the combustion chamber. It is often in contact with high temperature and high pressure gas, so it bears a large thermal load and mechanical lo...

2017年6月9日，玉环市委书记一行一行来到永裕进行调研。他高度评价永裕近年来取得的成就，并鼓励在座的每个人从事汽车和摩托车工作。