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Courier Poly Mailers Bags from China — Sourcing, Inspection & Shipping

We purchase from 1688, Taobao, Yiwugo with zero commission, inspect and take photos at our Guangzhou warehouse, and ship to your destination.

No buying commissionFree photos of every orderPay shipping on delivery
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Guangzhou warehouse: storage racks with boxesGuangzhou warehouse: storage racks with boxes

What clients order

Opaque co-extruded polyethylene courier mailers with permanent tamper-evident peel-and-seal adhesive

High-security evidence bags with void tamper-indicating security tape and barcode numbering

Document enclosed clear pouch shipping mailers for courier waybills and packing slips

Custom colored matte finish boutique mailer bags for e-commerce apparel brands

Certified biodegradable compostable cornstarch shipping mailer envelopes

What we inspect at the warehouse

Visual inspection of bag side weld seams for continuous edge integrity

Inspection of co-extruded film opacity to ensure interior cargo privacy and light-blocking

Inspection of hot-melt adhesive strip presence and release liner integrity

Dimensional measurement of total width, usable interior depth, and flap fold length

What is not inspected

Chemical plasticizer gas chromatography, forensic tampering microprint vulnerability, and certified industrial composting degradation

Where we source & buy

Wholesale and factory direct platforms in China with zero buying commission

1688

China's wholesale B2B marketplace connecting hundreds of thousands of manufacturing facilities, industrial

Courier Poly Mailers Bags · 1688
Taobao

China's vast consumer online marketplace connecting millions of independent merchants, designers, and local

Courier Poly Mailers Bags · Taobao
Yiwugo

The online showcase for the Yiwu International Trade City (Futian Market), the world-renowned wholesale

Courier Poly Mailers Bags · Yiwugo

How we work

1

Send a product link or the tracking number of purchased goods.

2

A manager calculates the quote — you confirm.

3

We buy with zero commission or receive your order at the Guangzhou warehouse.

4

We inspect, photograph, and dispatch to your city.

5

You receive the goods at destination; route confirmed in quote.

Frequently Asked Questions

How are courier poly mailers protected from moisture during international freight?
Mailers are pre-bundled in sealed master polythene sacks inside heavy-duty corrugated cartons to keep them clean and dry.
Can custom color poly mailers with brand logo printing be produced?
Yes, Chinese manufacturers produce custom Pantone-matched mailers with rotogravure or high-definition flexo printing for bulk orders.
How is tamper-evident peel-and-seal adhesive tested at the Guangzhou warehouse?
Inspectors peel the release liner on a sample bag, press the flap firmly, and verify that opening attempts cause destructive tearing of the film.

Other product categories

All categories
📦Packaging Boxes and Mailer Bags📜Stretch Film, Tape, and Cushioning🏷️Thermal Labels and Ribbons🏬Retail Display Racks and Hangers⚖️Packaging and Sealing Equipment🛍️Zip-Lock Bags and Pouches👗Mannequins and Display Forms📦Cardboard Boxes And Kraft Bags🏷️Packaging Tapes And Dispensers🛍️Ziplock Bags And Doypack PouchesAll categories

Send product link — get a quote

Provide a product link from 1688, Taobao, or Poizon. Our manager will calculate the shipping cost to your destination.

We confirm the exact amount before payment
Free photos of every order before shipping
Pay shipping on delivery

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We will respond during business hours, usually within 2 hours.
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During working hours we aim to reply within 2 hours; complex requests or requests received during Chinese public holidays may take up to one day.