Linyi Guoshengli Packaging Material Co., Ltd. brings you Quad Seal Pouches & Bags engineered for superior performance. With 25 years of manufacturing expertise, our four-corner seal bags feature reinforced vertical seals on each corner, providing exceptional load capacity up to 25kg for heavy products like flour and grains. Our facility operates 7 printing lines with up to 11-color rotogravure capability and 49 converting machines, ensuring fast turnaround times: 7–10 days for digital printing and 15–20 days for rotogravure. ISO 9001, BRC, FDA, and SGS certified, we deliver factory-direct, customizable solutions with flexible MOQ options tailored to your brand needs.




These innovative bags stand out in the flexible packaging world.
Unlike conventional pouches, they highlight four distinct vertical seals situated at each corner. This makes a box-like structure with exceptional stability.
The design moves seals away from the center panel to the edges. This engineering choice solves common issues like package slumping and poor shelf presence.
You get five flat panels for printing: front, back, two sides, and bottom. That means maximum branding space for your product story.
The strengthened corners give incredible quality. Your heavy-fill products remain secure during shipping and storage.
This packaging format eliminates back-seal overlap. You enjoy an uninterrupted surface for eye-catching graphics and product information.
Our multi-layer laminated structure keeps your products fresh longer.
Moisture, oxygen, and contaminants stay out. Your flour, grains, or powdered foods maintain quality from production to consumer.
We use advanced laminating technology across 6 dedicated machines. This ensures consistent barrier performance in every pouch.
The four-corner seal design isn't just about looks.
It delivers genuine structural advantages for bulk packaging. Each seal distributes weight evenly across the pouch.
You can fill confidently up to 25kg without worrying about tears or failures. Perfect for wholesale and industrial applications.
Stand out on crowded shelves with stunning visuals.
Our 11-color rotogravure printing creates vibrant, photo-quality graphics. Every panel becomes valuable marketing real estate.
The flat surfaces display your brand message without distortion. Consumers notice the professional appearance immediately.
Functionality matters as much as appearance.
We integrate ergonomic handles for easy lifting and carrying. Your customers appreciate the convenience when handling larger volumes.
This feature transforms bulk packaging into user-friendly products. It enhances the overall customer experience significantly.
Work directly with the manufacturer for better results.
We customize sizes, materials, printing, and features of Quad Seal Pouches & Bags to match your exact requirements. No middleman markup or communication delays.
Our design team collaborates with you from concept to final production. You get exactly what your brand needs.

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Feature
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Details
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Design Type
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Four-corner vertical seals with reinforced gussets
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Material Options
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PET/PE, PET/AL/PE, MOPP/PET/PE, Kraft paper laminate
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Printing Capability
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Up to 11-color rotogravure printing
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Load Capacity
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Up to 25kg (suitable for bulk products)
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Barrier Properties
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High moisture, oxygen, and light protection
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Available Sizes
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Customizable: 500g to 25kg capacity
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Features
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Built-in handle, resealable zipper, degassing valve (optional)
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Certifications
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ISO 9001, BRC, FDA, SGS
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MOQ
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Flexible minimum order quantities available
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Lead Time
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Digital: 7–10 days / Rotogravure: 15–20 days
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Delivery Options
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Air shipping (4–5 days), sea freight available
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Flour, rice, coffee beans, sugar, and dried fruits perform exceptionally in these pouches.
The airtight seals keep up freshness for expanded periods. Consumers trust packaging that protects product quality.
Bulk products gain premium shelf presence. Your brand competes successfully with established names.
Heavy pet food bags require robust packaging solutions.
The solid strong seals handle rough handling during distribution. Pet owners appreciate easy-carry features for larger bags.
Fertilizers, seeds, and animal feed benefit from moisture-resistant packaging.
Our pouches withstand challenging storage enviroments. Products remain dry and effective until use.
Protein powders and supplement mixes require dependable boundary protection.
The multi-layer structure prevents oxidation and moisture retention. Your formulations maintain potency throughout shelf life.


Twenty-five years in flexible packaging means we've solved countless challenges.
We understand material science, printing innovation, and market requests. You benefits from accumulated knowledge and refined processes.
Our facility houses impressive manufacturing capabilities:
· 7 advanced printing lines for high-volume production
· 6 laminating machines guaranteeing quality multi-layer construction
· 49 converting machines for quick order fulfillment
This infrastructure means shorter lead times for your projects. We handle both small batches and large-scale orders efficiently.
International certifications aren't just paperwork for us.
ISO 9001 ensures consistant quality management. BRC and FDA certifications confirm food-safe manufacturing standards.
SGS testing validates material performance. You get comprehensive documentation for regulatory compliance.
Sustainability matters to modern consumers and businesses.
We use imported RTO exhaust gas treatment technology. This reduces emissions during production significantly.
Our 100% recyclable packaging choices help you meet environmental objectives. Responsible manufacturing doesn't compromise performance.
From initial inquiry to final delivery, we're with you.
Our responsive team handles design consultation, inspecting, production updates, and logistics coordination. Communication flows smoothly all through your project.
We understand worldwide business requirements. Time zones and language difference won't slow your progress.

A: We offer flexible MOQ options to accommodate startups and small businesses. Contact our team to discuss your specific volume requirements. We're committed to making premium packaging accessible.
A: Digital printing orders complete in 7–10 days. Rotogravure printing takes 15–20 days. Rush air delivery reaches you in just 4–5 days. We understand your time-to-market pressures.
A: Absolutely. Our 11-color rotogravure printing reproduces precise color matching. Provide your Pantone references or brand guidelines. We'll deliver consistent color accuracy across your entire order.
A: We recommend multi-layer laminates with strong moisture barriers. PET/PE or MOPP/PET/PE structures provide excellent protection. Our technical team will specify the ideal combination for your product characteristics.
A: Yes, we create samples to confirm design, materials, and functionality. This ensures you're completely satisfied before full production begins. Sample turnaround is quick, keeping your project on schedule.
A: Our pouches are designed for compatibility with standard filling machinery. We can adjust specifications to match your equipment requirements. Share your filling system details for optimized pouch design.
A: All materials are FDA-approved and manufactured in BRC-certified facilities. We provide complete testing reports and certificates of compliance. Your products meet international food safety standards.
A: Certainly. We customize pouches with various functional features including zippers, tear notches, degassing valves, and hanging holes. Tell us how your customers will use the product, and we'll design accordingly.
Partner with a manufacturer that combines experience, capacity, and quality. Let's create Quad Seal Pouches & Bags packaging that protects your products and promotes your brand effectively.
Contact us today: sales@guoshengpacking.com