PVC Resin Guides

What the COA covers, which figures to compare against the specification, and what to do if they do not match.

The information you need before you can order, and the questions worth asking your current supplier.

What FOB, CIF and CFR actually decide for a bulk resin shipment, and how payment terms are normally structured.

How resin is packed for export, what the loading options are, and the questions that determine whether a container works.

Why more filler changes the grade you should order, and how to work out the right grade for your formulation.

The 0.25 mm and 0.063 mm sieve figures, what a wide distribution does to fusion, and why fines cause problems at the hopper.

The three grade levels inside every SG grade, which indicators actually differ, and how to pick the one your process needs.

What the viscosity band actually controls, how it is measured, and why buyers should specify a grade rather than a K value.

The two grades buyers ask about most. A practical comparison of viscosity band, particle behaviour and the products each one ends up in.