Process and Production Methods; trade barrier; like product.
生产过程与生产方法；贸易壁垒；相似产品。
These two methods have the characteristics of simple process. high production efficiency and low production cost.
此两种方法工艺简单，生产效率高，生产成本低。
These two methods have the characteristics of simple process. high production efficiency and low production cost.
此两种方法工艺简单，生产效率高，生产成本低。
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