其中，不锈钢酒壶采用氩弧焊工艺，系国内首创。
Therefore, the stain-less steel hip flask adopts argon arc welding technique, it is the initiate of home.
吸锡枪升温快，吸力强，除锡干净彻底，属国内首创。
Vacuum gun has quick heat and strong vacuum power for high efficient tin remove. It is originate in China.
液压提升倒装法是一种先进的多管式烟囱钢内筒安装方法，属国内首创。
Hydraulic lifting upside-down method is advanced for the internal steel stacks' installation, and it was firstly invented inland.
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