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Cast or blown stretch film — the four differences that matter
Same polymer, two processes, and a price gap that is worth paying on some loads and wasted on most of them.
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How polyethylene pricing works, and what a buyer can do about it
Why film and sack prices move without your supplier changing anything, and the three parts of the bill that are actually within your control.
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LDPE or HDPE — the question a micron figure cannot answer
A supplier quoting 20 µm against your 40 µm may be offering a like-for-like replacement, or half the sack. Here is how to tell which.