Trough the investigation on the performances of some kinds of additives, the formula composition of DCB4012CF Marine diesel engine oil with medium speed and cylindrical piston type was validated.

通过对各类添加剂性能的考察，确定了DCB4012 CF船用中速筒状活塞柴油机油的配方组成。

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Model GN8320 Marine Diesel Engine is a medium speed series diesel engine. It is designed and manufactured by ourselves. It is good diesel engine instead of foreign.

GN8320型船用柴油机系我国自行设计、自行制造的中速船用柴油机系列产品，是替代进口机的良好机种。

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Model G6300 Marine diesel engine is a medium speed series diesel engine. It is designed and manufactured by ourselves. It is good diesel engine instead of foreign.

G6300型船用柴油机系我国自行设计、自行制造的中速船用柴油机系列产品，是替代进口机的良好机种。

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