Plastic heart valves do exist and every year in the UK thousands of people have operations to replace faulty heart valves.

采用塑胶心脏瓣膜是可行的，每年在英国有成千上万的人做手术来替换有缺陷的心瓣膜。

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Therefore, the electroless plating is widely applied to many fields including reparation of worn workpieces, plastic die and mould, gear, gear-shafts, and ball cores of valves in petroleum, etc.

使化学镀在磨损零件修复、塑料模具、齿轮、齿轮轴、石油阀门球芯等方面得到良好的应用。

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We offer a wide range of metal and plastic valves and fittings that keep residential, commercial and industrial operations flowing smoothly throughout the world.

我们提供系列广泛的金属和塑料阀门和连接件，在全世界为家庭、商业和工业领域提供顺畅的流体控制服务。

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