Reporter: Somebody has to have depth of understanding.
记者：一些人需要有很深的理解。
In-depth understanding of gas business and market, gas application and package and gas products.
透彻了解气体市场和业务、气体产品的包装和应用等。
Can help the heart in-depth, to increase understanding of self-discovery.
可以协助深入内心，发现自我提高悟性。
Can help the heart in-depth, to increase understanding of self-discovery.
可以协助深入内心，发现自我提高悟性。
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