Thickened and upgraded, not easy to break
Leak-proof and strong, not easily broken
High toughness and tensile strength, excellent airtightness, better preservation and sealing
It is relatively brittle, has poor toughness, and poor sealing properties
Thickened, high-transparency
Unable to thicken, low transparency
Water vapor transmission rate is less than 60 g/(m², 24h).
No requirement for water vapor throughput
High airtightness and good sealing and preservation effect
Poor airtightness results in even worse preservation.