I professional production company car jianzhenqi piston teflon piston ring without connectors, alternative similar imported products. Shanghai huizhong and henan xichuan now supporting suppliers.

我公司专业生产汽车减振器活塞聚四氟乙烯无接头活塞环，替代同类进口产品。现为上海汇众和河南淅川的配套供应商。

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Makers of fixed-wing aircraft are also looking at diesel engines, in small planes at least, where they show promise as a serious alternative to standard piston engines, which run on a high-octane form of petrol.

ECONOMIST: Monitor