Button material is roughly divided into plastic (resin, plastics), metal button type (copper, iron,) alloy, natural class (shells, wood, coconut shell, bamboo, all kinds of materials to make buttons, crafts are not the same, some buttons look the same, even the industry people with eyes can not be able to see clearly, so destroy, scraping the coat can be separated.)
button to distinguish between plastic buttons and resin buttons, plastic buttons and resin buttons, plastic (including all kinds of plastic) buttons are generally die-casting, so there will be a line on the edge of the button, the clamping line, some factories may be removed in the subsequent processing of the line, but its weight will be lighter than the resin (of course some special plastics will be heavier), the resin button is mechanically carved, and then polished, so the surface does not have a full-die line, very clean, but it is fragile, prone to scratch surface, put in boiling water will become soft.
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