What is the main differences between EPS filling gun and EPP filling gun are as follows.
Steam core vents
EPP filling gun add steam core vents for better steam penetration, Steam is used to make the EPP foam product heated more evenly.
Sealing ring different
EPP filling gun has 2 extra Glacial seals for better sealing result.
Small hole for air
EPP filling gun add an extra small hole for better air
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