Engvangin Nge Lidding Film hi Sealing A Ni Lo?Lidding film sealing loh hi root problem 12 zinga pakhat emaw a aia tam emaw avanga lo awm a ni tlangpui: thil inmil lo, reversed film, temperature dik lo, dwell time dik lo, uneven pressure, flange contamination, chhia tray-ah te dah a ni , tooling chhia, unstable film tension, overf
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