Buying Guide
How to Source Corrugated Mailers from China
Buyer guide to corrugated mailers from China: styles, flute and ECT, print, DIM weight, sampling, and RFQ fields for e-commerce shipper programs.
Quick answer
Source corrugated mailers by locking internal dimensions, flute/ECT, style (book mailer, side-load, auto-lock), and print needs against your damage rate and DIM-weight economics—not by copying a competitor’s outer size photo.
Mailer families to name on the RFQ
Book-wrap mailers, side-load RSC-like shippers, variable-depth designs, and branded e-commerce mailers with tear strips. They are still corrugated shippers—use flute and strength language, not only “mailer.”
Board and performance
E-flute and B-flute are common for lighter parcels; heavier SKUs may need higher ECT or double-wall. Define drop targets and whether parcels stack in trailers. Recycled liners are fine if scan and crush hold.
Print and unboxing
Flexo brand panels, inside print, and tear-strip quality drive perceived brand. Approve barcode scans on real board. Soft-touch laminates raise cost and scuff risk—trial before launch.
RFQ fields
Style; ID L×W×H; flute/ECT
Print colors; tear strip; monthly volume
Damage/DIM goals; sample policy; Incoterms
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