Engine parts, particularly the piston, must be kept free of varnish to ensure performance and proper cooling.

发动机零件尤其是活塞，必须保持光泽以确保性能和正确的冷却。

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Our company is a professional salt core (for inner cooling gallery of aluminum piston) producer in China with abundant funds and technical advantages in the production of salt cores.

我公司是中国国内专业（铝活塞内冷油道）盐芯生产商，在盐芯的生产上拥有雄厚的资金和技术优势。

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Salt core Al alloy piston and the new way of shaping cooling channel with water soluble salt core are introduced.

介绍盐芯铝活塞概要和一种新型水溶性盐芯成形内冷却油腔的方法。

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