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There are two schemes for ejector pin
Foamed plastic is a plastic with many small bubbles inside the foam. The foam box, or fully automatic foam machine, is a box type packing container made of foam plastic. So what data and equipment do we need to produce EPS foam boxes?
With the development of chemical industry, polystyrene foam has been turned into a more promising market for building insulation materials from packaging materials and disposable tableware.
P-nitrobenzoic acid (PnBA) is mainly used in the manufacture of strong fibers, pesticides, dyes, resins, metal surface antirust agents, sunscreen agents, color film couplers and filters.
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