... distortion. 2)Each box of section processed through professioral, equiipmert, to assure high precision and good exchangeability. 3)Forming, sealing, ... ease of operation, stable running. 6)Mould located by male pin, ease and accuracy of changing mould. Product any sizes and shapes of ... 7)It adapts up and down net pattern concavo-convex to conjugate, multi-step air cylinder, double-heat sealing. Quality ...