As global awareness of plastic pollution grows, more businesses are making the shift toward compostable packaging. One of the most in-demand alternatives today is the compostable mailer bag—a sustainable option for shipping that reduces environmental impact without compromising functionality.
If you’re a brand or distributor looking to source compostable mailer bags in bulk, China has become a leading supplier. However, with so many options available, it can be challenging to identify reliable manufacturers and understand what sets quality products apart.
This guide will walk you through the essentials of sourcing compostable mailer bags from China—including materials, certifications, pricing, and how to choose the right factory.
What Are Compostable Mailer Bags?
Compostable mailer bags are made from plant-based materials such as PLA (polylactic acid), PBAT (polybutylene adipate terephthalate), and cornstarch. When properly disposed of in a composting facility, these bags break down into carbon dioxide, water, and biomass within a few months.
There are two common categories:
- Home compostable mailers, which decompose in backyard composting environments
- Industrial compostable mailers, which require higher heat and controlled conditions to break down
Choosing the right type depends on your end customers and how the packaging will be disposed of. These bags are also widely referred to as eco mailers, zero-waste packaging, or green shipping supplies, depending on the use case and marketing angle.
Why Source from China?
China is one of the world’s largest producers of compostable materials and has a well-established supply chain for eco-friendly packaging. Many factories offer:
- Competitive pricing for bulk orders
- Access to PLA/PBAT raw materials
- Custom printing and packaging solutions
- Experience with export documentation and certifications
When working with Chinese suppliers, it’s important to confirm that the bags are genuinely compostable and not simply marketed as “biodegradable.”
Key Certifications to Look For
Reliable compostable mailer bags should meet one or more of the following standards:
- EN13432 (EU standard for industrial composting)
- ASTM D6400 (U.S. standard for compostability)
- OK Compost or OK Compost Home (indicates suitability for home composting)
- BPI Certification (widely recognized in North America)
These certifications are critical if you plan to sell your products in regulated markets like the U.S., U.K., or EU.
How to Choose the Right Supplier
Not all factories that claim to make compostable bags have the capability to meet export standards. Here are a few tips:
- Ask for third-party certification reports
- Request material breakdowns (e.g. PLA + PBAT ratio)
- Confirm whether the bags are home or industrial compostable
- Request samples to check seal strength, thickness, and print quality
- Choose suppliers that focus on compostable packaging rather than general plastic products
One example of a specialized manufacturer is Hemcbags, a China-based supplier focused solely on certified compostable packaging. Their mailers are made from renewable plant starches and can be customized with your branding and sizes.
Pricing Overview
Compostable mailer bag prices depend on size, thickness, certification, and order volume. For reference:
- Small mailers (25x33cm): $0.08 – $0.15 USD/pc
- Medium mailers (35x48cm): $0.12 – $0.22 USD/pc
- Large mailers (48x60cm): $0.20 – $0.35 USD/pc
Prices tend to decrease with higher order quantities or recurring contracts.
Customization and Shipping
Chinese suppliers often offer a range of customization options:
- Logo printing (single or multi-color)
- Size adjustments
- Double adhesive strips for returns
- Matte or glossy finishes
For international shipping, common trade terms include:
- FOB (Free On Board)
- CIF (Cost, Insurance, and Freight)
- DDP (Delivered Duty Paid, including customs clearance)
Suppliers like Hemcbags support multiple incoterms and can provide shipping estimates based on your region.
For a more detailed breakdown of custom options, production lead time, and order requirements, read our full article: Custom Compostable Mailers – MOQ, Lead Time and Where to Buy
Related Sustainable Packaging Options
In addition to compostable mailers, many eco-conscious brands also offer sustainable alternatives for pet waste, food delivery, and bin liners. If you’re exploring more SKUs, check out our post: Compostable Dog Poop Bags Bulk
Final Thoughts
Sourcing compostable mailer bags from China can be a cost-effective and sustainable way to reduce your environmental footprint while meeting customer expectations for eco-friendly packaging. The key is choosing a supplier with genuine experience, proper certification, and the ability to support custom orders.
By working with a specialized manufacturer like Hemcbags, you gain access to certified materials, expert support, and flexible production tailored to your brand’s needs.
Whether you’re just starting your transition to compostable packaging or scaling up an established product line, China offers both the capacity and the innovation to help you succeed.
Frequently Asked Questions (FAQ)
Q1: Are compostable mailer bags from China truly eco-friendly?
Yes, if they are made with certified materials like PLA and PBAT and hold certifications such as ASTM D6400, EN13432, or OK Compost. Always verify with the supplier.
Q2: What’s the MOQ (Minimum Order Quantity) for compostable mailers in China?
MOQs typically start at 10,000–20,000 pcs, depending on size, thickness, and customization. Some factories offer lower MOQs for standard sizes.
Q3: How long does it take to receive custom mailer bags from China?
Production usually takes 15–25 days, plus shipping (7–35 days depending on air or sea freight). Some suppliers offer DDP shipping with all duties included.
Q4: Can I print my logo on the compostable bags?
Yes. Most Chinese manufacturers support single or multi-color printing with your logo, brand message, or eco-friendly symbols.
Q5: What’s the price range for wholesale compostable mailer bags?
Prices vary based on size, thickness, and quantity. For bulk orders, expect $0.08–$0.35 per piece.
