starch-based eco cutleries How is the structure sealed
Single cap (with a cylindrical seal inside, almost all drinks can be used);
Double cap (there is a soft cushion inside, often used by Sprite and Coke);
The two types of bottle cap sealing principle and sealing structure are different:
The single cap depends on the sealing ring, top seal, side seal three structures to ensure the sealing effect, of which the sealing ring is necessary, the side...
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