Thickness is where a lot of wholesale orders go wrong, because two measurement systems are used around the world. Get this right before you request a quote.
Mil (used in North America) = one-thousandth of an inch. Micron / µm (used in Europe, Asia and most of the world) = one-thousandth of a millimetre. They are not the same.
1 mil = 25.4 microns. So a 2.0 mil bag ≈ 50 µm; a 1.5 mil bag ≈ 38 µm. Always confirm which unit a supplier is quoting.
Thickness is only part of strength — resin type (HDPE vs LDPE), whether the film is single-layer or co-extruded (multi-layer), and the seal all matter. Always confirm whether a gauge is quoted per wall or as both walls combined, so quotes are compared on the same basis.
Tell us the finished size, the load it must carry, and either the mil or micron you need. If you're unsure, send a current sample and we'll measure and match it.
Send your sizes, thickness, colour and quantity — we reply with FOB pricing, samples and lead time.