Fungsi busa plastik
Ketika mengirimkan suatu barang atau paket, khususnya barang elektronik, pasti kita sering mendapati busa plastik yang membungkusnya. Busa plastik tersebut berisi udara. Gunanya adalah untuk melindungi barang yang dibungkus agar tidak pecah akibat hantaman. Baik ringan ataupun keras.
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