caviar tin testing after vacuum packing（put caviar tin into water）
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Update time : 2017-11-17 11:53:10
caviar tin vacuum degree testing video
put caviar tin into water
testing paper will change colour after meeting water
Check the paper testing video testing paper will change colour after meeting water
Check caviar tin vacuum degree video
put testing paper into caviar tin
put caviar tin into water
Testingpaper do not change colour and our vacuum packing machine is excellent
