1, ask: why in the use of treatment agent material will be easy to yellow?
Answer: This is related to the material itself, the agent processing and correct operation.
2, ask: why in the finished product shoe inspection will find a part of shoes do not eat gum, but do not eat gum parts but not often appear?
Answer: this and in the use of treatment agent is in place for wiping.
3, ask: why do the materials in the oven when there will be "open" or "drawing" phenomenon?
Answer: This machine is in place, the glue heat resistance, crystallization conditions and selection of treatment agent.