About Us

SGS-Verified Flexible Packaging Manufacturer in Shenzhen, China

Shenzhen Sainsun Packaging Co., Ltd. has been producing custom flexible packaging for food brands worldwide since 2017. From our verified 10,103 m² facility, we deliver OEM/ODM retort pouches, microwave-ready bags, and food-contact films — built to FDA, EU, and ISO 9001 standards.

Our Story

Built on Custom Engineering, Not Stock SKUs

Sainsun Packaging was founded in 2017 in Shenzhen, Guangdong — one of China's most mature manufacturing hubs and home to the country's largest export port complex. From day one, our model was different from a trading company or a stock-SKU supplier: every order is produced to the customer's specification.

Over the past 9 years we have shipped custom flexible packaging to food brands across North America, Western Europe, and the Middle East. Our verified on-time dispatch rate of 97.4% is not a marketing claim — it is the figure Alibaba records from our actual export orders, audited by SGS through their onsite inspection program.

Today our facility spans 10,103 m² with 10 production lines covering printing, lamination, slitting, bag-making, and quality control. A team of 65 staff — including 3 R&D engineers and 4 dedicated QA/QC inspectors — supports every project from first sample to final shipment.

Sainsun Packaging production hall — 10 production lines in Shenzhen, China

Sainsun production floor — 10 lines, 10,103 m² verified facility

Mission & Values

Packaging That Protects Food, Brands, and Trust

Three principles shape every project we take on — from a 10,000-unit repeat order to a first-time sample for a new brand.

Engineer to Spec, Not to Stock

We don't push you toward a catalog. Your product's barrier, shelf-life, and brand requirements drive material selection, print complexity, and pouch format. R&D supports custom structures from the ground up.

Compliance First

Every food-contact pouch we produce is built to FDA 21 CFR 177 (US) and EU 1935/2004 + 2020/1245 standards, under an ISO 9001 quality management system. Documentation travels with the shipment, not as an afterthought.

On-Time Is a Promise, Not a Hope

Our 97.4% on-time dispatch rate is verified by Alibaba's platform data, not self-reported. Four QA/QC inspectors sit inside the production flow, not just at the end — issues are caught before they become delays.

Capabilities

Verified Facility, Verified Numbers

Every figure below is drawn from our SGS-audited Alibaba Verified Supplier profile — not a marketing brochure.

10,103 m²

Verified facility

✓ SGS Verified

Production lines

✓ SGS Verified

Testing instruments

✓ SGS Verified

Employees

✓ SGS Verified

R&D engineers

✓ SGS Verified

QA / QC inspectors

✓ SGS Verified

Certifications

Food-Contact Compliance Across Three Regulatory Zones

Our packaging is tested and certified for the markets our customers actually ship to — United States, European Union, and international ISO quality management.

ISO 9001International

Quality Management System

FDA 21 CFR 177United States

Food Contact Compliance

(EC) 1935/2004European Union

Food Contact Materials

(EU) 2020/1245European Union

Food Contact Compliance

SGS VerifiedInternational

Third-party onsite inspection

Global Reach

Exporting to North America, Europe & the Middle East

Approximately 90% of our export volume serves the US and EU — markets with the strictest food-contact documentation requirements. We are experienced with that paperwork.

North America50%

Western Europe40%

Middle East10%

Production Process

From Design to Pallet — 10 Steps, In-House

Every stage from raw film to palletised shipment happens under one roof. No outsourcing, no mystery suppliers in the middle.

Step 1

Design

Step 2

Raw Material

Step 3

Pattern Samples

Step 4

Printing

Step 5

Lamination (Complex)

Step 6

Oven

Step 7

Cutting Film

Step 8

Making Bag

Step 9

QC Check

Step 10

Packing

Ready to Start Your Custom Packaging Project?

Share your product type, size, and barrier requirements. We will respond within 2 hours during business hours with next steps and a sample plan.