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GPPS is clear and stiff but brittle; HIPS is opaque and tough. Many thermoformed and moulded products use one, the other, or a blend of both.

From the first WhatsApp message to the loaded truck: how an order for Iranian polymer granules works, what you pay and when, which documents you receive and how the goods reach your country.

HDPE gives thin, stiff film; LDPE gives clarity and easy processing; LLDPE gives toughness and stretch. Most film lines use a blend. This guide matches each to the films it suits.

Pigment powder is cheaper per kilo of colour, but masterbatch is cleaner, easier to dose and gives a more even colour. Here is how to choose.

Recycled granules can cut material cost, but only if the lot runs well on your line. These seven checks tell you what to ask for and what to test before you order.