Sainsun Packaging

Custom Flexible Packaging for Food Brands

Custom Flexible Packaging Solutions, Engineered for Food Brands Worldwide

9 years exporting from Shenzhen, China. SGS-verified manufacturer. ISO 9001 quality management. OEM/ODM ready — from retort pouches to our proprietary microwave-ready bags.

Get a QuoteRequest Samples
  • 9+
    Years of export
  • 10
    Production lines
  • 30+
    Countries served
Sainsun production facility — verified manufacturing partner
9 Years
Exporting Experience
97.4%
On-Time Dispatch Rate
4.8 / 5
Customer Rating (33 reviews)
≤ 2h
Average Response Time
10
Production Lines
10,103 m²
Verified Floor Space

Quality & Compliance

Certified Quality, Backed by Independent Audit

Every product is manufactured under internationally recognized quality and food-safety standards, with regular third-party onsite inspection.

ISO
ISO 9001
Quality Management System
International
FDA
FDA 21 CFR 177
Food Contact Compliance
United States
(EC)
(EC) 1935/2004
Food Contact Materials
European Union
(EU)
(EU) 2020/1245
Food Contact Compliance
European Union
SGS
SGS Verified
Third-party onsite inspection
International

Product Range

Packaging Solutions for Every Food Category

Six core product lines, engineered around real food-safety and brand requirements.

01

Retort / Cooking Bags

High-temperature resistant pouches for sterilized, shelf-stable food.

View Products
Microwave-Ready Bags — representative product image
02⭐ Patented Tech

Microwave-Ready Bags

Heat straight from freezer to microwave — no need to open the bag first.

View Products
Food Packaging Bags — representative product image
03

Food Packaging Bags

Versatile flexible packaging for a wide range of food products.

View Products
Flexible Packaging Bags — representative product image
04

Flexible Packaging Bags

Custom multi-layer laminated pouches built to your specifications.

View Products
05

Pet Food Packaging Bags

Durable, freshness-locking packaging for pet food brands.

View Products
Coffee Bags — representative product image
06

Coffee Bags

Aroma-preserving pouches with valve options for roasters and brands.

View Products

待确认 · Spotlight badge uses 'Patented Tech' shorthand; upgrade wording once the patent number is verified — currently described as 'proprietary'.

Featured Innovation

No Need to Open the Bag Before Microwaving

An engineered pressure-release point automatically vents built-up steam during heating, preventing bursting while locking in freshness and texture until you're ready to eat. It is suitable for a wide range of frozen and ready-to-heat foods.

  • Automatic venting design prevents bursting
  • Advanced material maintains freshness and moisture barrier
  • Even microwave heating preserves optimal texture
  • Suitable for dumplings, buns, ready meals, rice, noodles, soups, and more
View Product DetailsRequest a Sample

待确认 · Patent status待确认 — currently described as 'proprietary venting design'. Once the patent number is verified, the wording can be strengthened to an explicit patent claim.

Microwave-ready venting pouch product
STEP 1
Place the sealed bag directly in the microwave — no need to open it first.
STEP 2
Heat according to package instructions.
STEP 3
Tear along the pre-cut notch to open and enjoy.

OEM / ODM Process

From Concept to Custom Packaging

A clear path from first contact to delivered packaging, with quality checks at every stage.

01

Share Your Requirements

Send us your product type, size, material, and design ideas.

02

Sampling & Approval

We produce samples for your review and feedback.

03

Production

10 production lines with 4 QA/QC inspectors across the workflow.

04

On-Time Delivery

97.4% on-time dispatch rate, 9 years of export experience.

Production Line

Inside Our 10 Production Lines

A real workflow — design, printing, lamination, bag-making, QC and packing — all under one roof.

Production step 1: Design
Step 1
Design
Production step 2: Raw Material
Step 2
Raw Material
Production step 3: Pattern Samples
Step 3
Pattern Samples
Production step 4: Printing
Step 4
Printing
Production step 5: Lamination (Complex)
Step 5
Lamination (Complex)
Production step 6: Oven
Step 6
Oven
Production step 7: Cutting Film
Step 7
Cutting Film
Production step 8: Making Bag
Step 8
Making Bag
Production step 9: QC Check
Step 9
QC Check
Production step 10: Packing
Step 10
Packing
Sainsun production hall — 10 production linesIn-line quality controlFinal packing before shipment

Factory Strength

More Than a Supplier — A Verified Manufacturing Partner

Shenzhen Sainsun Packaging Co., Ltd. is a custom flexible-packaging manufacturer in Shenzhen, China, with a verified 10,103 m² facility, 10 production lines, 9 testing instruments, and 65 staff including 3 R&D engineers and 4 QA/QC inspectors. We export to North America, Western Europe and the Middle East, serving food brands that need reliable OEM/ODM production from sample to shipment.

10,103 m²
Verified facility
10
Production lines
9
Testing instruments
65
Employees
3
R&D engineers
4
QA / QC inspectors

Where We Ship

Trusted by Buyers Across Three Continents

Verified by Alibaba third-party inspection. View our full Alibaba storefront for client references and transaction history.

View Alibaba Storefront
North America50%
Western Europe40%
Middle East10%

Buyer FAQ

Answers to Common Buyer Questions

MOQ, sampling, certifications, lead time and more — straight answers from our verified factory data.

What is your minimum order quantity (MOQ)?

MOQ varies by product type, material, and size. As a custom OEM/ODM manufacturer we do not stock standard SKUs — each order is produced to your specification. Send us your product details via the inquiry form and we will quote an MOQ that matches your project, typically with a lower threshold for repeat orders.

Do you provide samples before production?

Yes. Sampling is the second step of our standard workflow: you share your requirements, we produce a sample for your review, and production starts only after your approval. Sample terms (free vs paid, lead time) depend on the structure and printing — please confirm with our sales team.

What certifications does your packaging hold?

Our packaging complies with FDA 21 CFR 177 (United States), (EC) 1935/2004 and (EU) 2020/1245 (European Union) food-contact regulations, and we operate under an ISO 9001 quality management system. SGS has verified our facility through onsite inspection as part of the Alibaba Verified Supplier program.

Can you manufacture custom pouch sizes, shapes, and prints?

Yes — this is our core capability. We support custom sizes, formats (stand-up, flat, quad-seal, spouted, shaped), and rotogravure or flexographic printing up to 10 colors. Materials, barrier structures, and finishes (matte, gloss, soft-touch, metallic) are configured to your product's barrier and shelf-life requirements.

What is the typical lead time for production?

Lead time depends on order volume, material availability, and print complexity. Once your sample is approved and deposit received, we schedule production across our 10 lines. Our verified on-time dispatch rate is 97.4% across 9 years of export orders. Please confirm the specific timeline for your order with our sales team.

Which markets do you currently export to?

Approximately 50% of our export volume goes to North America, 40% to Western Europe, and 10% to the Middle East. We are experienced with US (FDA) and EU food-contact compliance documentation and ship from Shenzhen Port. Detailed references from existing clients in your region are available on request.

How can I contact Sainsun Packaging for a quote?

Use the inquiry form on this page, email us directly at Leolian@sainsunpack.com, or message us on WhatsApp at +86 18948566765. Our average response time is under 2 hours during business hours (China Standard Time). You can also visit our SGS-verified Alibaba storefront at sainsunrts.en.alibaba.com.
Have a different question? Ask us

Get in Touch

Let's Talk About Your Packaging Needs

Tell us about your product and requirements. Our team typically responds within 2 hours during business days.

Online inquiry form is being set up

For the fastest response, reach us directly using the buttons below. We respond within 2 hours on business days.

Email UsChat on WhatsApp

Or compose your message

Send via Email

Clicking opens your email app with the details pre-filled.