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Make your brand unforgettable from the very first touchpoint — the envelope. In China, our custom Nanhe No. 9 envelope printing solutions help you design packaging that reflects your brand's personality, values, and commitment to excellence. Premium materials, precise craftsmanship, elegant details, and endless customization possibilities combine to create envelopes that stand out immediately and build positive expectations. Whether you're sending corporate proposals, marketing campaigns, event invitations, or client thank-yous, a beautifully crafted envelope turns routine mail into a meaningful brand experience that recipients notice, appreciate, and remember long after delivery. In today's noisy world, this small but powerful upgrade can significantly improve response rates, strengthen brand perception, and create lasting positive associations.

When customizing envelopes in China, the core parameters directly determine the product's durability, professional appearance, mailing efficiency, and brand impact. Key factors include size specifications, paper material and weight, printing color options, surface finishes, and sealing structure. Proper selection helps balance quality and cost while matching local business needs (such as corporate correspondence, e-commerce packaging, or premium invitations). The table below summarizes the most practical core parameters with China-relevant recommendations.
| Parameter Category | Common Options | Explanation & China Local Recommendations |
|---|---|---|
| Size Specifications | DL (220×110mm), ZL (230×120mm), C5 (229×162mm), C4 (324×229mm) | DL and ZL are the most popular in China for business letters, invoices, and notices; C4 fits unfolded A4 documents; tolerance usually ±1mm to avoid mailing returns |
| Paper Material & Weight | 120g–140g kraft/white kraft paper, 100g–157g coated paper, 80g–120g recycled/offset paper | Kraft paper offers strong tear resistance, ideal for China's humid climate in e-commerce shipping and document protection; coated paper delivers vibrant colors for branding |
| Printing Color Scheme | Single color (black/red/blue), CMYK full color, Pantone spot color | CMYK full color is recommended for China company logos and promotional designs with rich, accurate reproduction; single color is more economical for low-volume orders |
| Surface Finishes & Post-Processing | Gold/silver foil stamping, spot UV, matte/gloss lamination, embossing, die-cutting (custom shapes) | Foil stamping + lamination creates a premium look for China wedding or event invitations; embossing adds tactile depth but requires 200g+ paper stock to prevent cracking |
| Sealing Structure & Closure | Peel-and-seal (with release liner), string-and-button, moisture-activated gum, tamper-evident self-adhesive | Peel-and-seal provides strong, secure closure for China confidential documents; string-and-button allows easy re-opening, perfect for gift envelopes and repeat-use scenarios |
In China, Nanhe No. 9 envelope printing provides professional envelope shapes to fit different document types. Rectangular envelopes are standard for official letters, square envelopes suit invitations or cards, and booklet envelopes are ideal for reports or multi-page communications. Choosing the right shape enhances usability and maintains a professional image.
| Envelope Shape | Generic Envelope | Rongli Custom Envelope |
|---|---|---|
| Rectangular | Official letters | Custom layout and branding for professional use |
| Square | Invitations | Premium style for events or marketing |
| Booklet | Manuals | Optimized for multi-page content |
E-commerce in China demands durable, lightweight sizes that protect products during transit. These specifications include protective variants like bubble-lined.
| Size / Type | Dimensions (mm) | China Shipping & E-commerce Notes |
|---|---|---|
| 10 × 13 Poly Mailer | 254 × 330 | Standard flat apparel shipping in China |
| 12 × 15.5 Bubble | 305 × 394 | Cushioned for fragile items in China logistics |
| 6 × 9 Padded | 152 × 229 | Small product mailers in China; tear-resistant |
| 14.5 × 19 Catalog | 368 × 483 | Larger e-commerce packages in China |
| Chinese Large Kraft | 250 × 350+ | Local express delivery in China platforms |
For high-volume, cost-effective mailing in China, lightweight papers reduce postage while maintaining functionality. These weights suit automated processes.
| Material | GSM Range | China Bulk & Cost Notes |
|---|---|---|
| Standard Bond | 80–100 GSM | Everyday office use; economical for China large runs |
| Light Kraft | 80–110 GSM | Strong yet light; good for China direct mail campaigns |
| Offset Text | 70–90 GSM | Writable and foldable; common in China newsletters |
| Recycled Light Bond | 80–100 GSM | Eco option without weight penalty in China |
| Manila Board Light | 90–120 GSM | Durable light protection for China files |
In China, Nanhe No. 9 envelope printing offers variable data printing for personalized envelopes. Names, addresses, QR codes, and serial numbers can be printed individually, improving mailing efficiency and enhancing recipient engagement.
| Technique | Standard Envelope | Rongli Custom Envelope |
|---|---|---|
| Digital Variable Printing | Static print | Customized text or graphics for each envelope |
| Numbering | Same numbers for all | Sequential numbers for tracking or promotions |
| QR/Barcode Printing | None | Individualized codes for mailing or marketing |
In China, Nanhe No. 9 envelope printing provides custom envelope sizes to meet unique business and personal needs. Tailored dimensions accommodate unusual document sizes, promotional materials, or gift inserts for a perfect fit.
| Size | Standard Use | Rongli Custom Envelope |
|---|---|---|
| 5" x 7" | Cards or invitations | Perfect fit for small, personalized items |
| 7" x 10" | Marketing brochures | Custom size for branding and design impact |
| Custom Rectangle | Varies | Fully tailored dimensions for special projects |
Sustainable window designs in China use biodegradable patches and recyclable materials without compromising clarity or function.
| Eco Option | Material/Spec | China Green Benefits & Uses |
|---|---|---|
| Compostable PLA Patch | Plant-based clear film | Biodegradable; ideal for China eco-promotions |
| Recyclable Polypropylene | Mono-material film | Easy recycling; suits China sustainable business mail |
| Minimal Patch Size | Smallest functional window | Reduces plastic; green choice for China bulk mail |
| Water-Based Adhesive Patch | No solvent glue | Low-VOC; for China green-certified projects |
| Paper-Based Semi-Window | Translucent paper instead of film | Fully paper-recyclable in China |
Nanhe No. 9 envelope printing in China provides matte finish envelopes in various colors. Matte surfaces reduce glare and give a smooth, professional look, suitable for corporate or premium mailings.
| Color Option | Common Use | Rongli Custom Envelope |
|---|---|---|
| Matte Black | Corporate mail | Professional and stylish appearance |
| Matte Navy | Business correspondence | Subtle and elegant color choice |
| Matte Grey | Invitations | Sophisticated muted tone |
In China, Nanhe No. 9 envelope printing offers cotton paper envelopes for high-end mailings. Cotton provides a soft, luxurious feel ideal for wedding invitations, premium correspondence, and certificates.
| Material | Common Use | Rongli Custom Envelope |
|---|---|---|
| 100% Cotton | Invitations & certificates | Soft, premium tactile experience |
| Cotton Blend | Luxury correspondence | Durable yet soft to touch |
| Cotton Rag | Special events | High-quality paper for standout mailings |
Quality control is a critical part of Nanhe No. 9 envelope printing production in China. A structured inspection process ensures that envelope size, printing accuracy, material consistency, and finishing quality meet defined standards before shipment. This helps reduce errors, returns, and communication risks.
| Inspection Item | General Practice | Rongli Quality Control |
|---|---|---|
| Size Accuracy | Manual spot checks | Full batch dimensional verification |
| Print Alignment | Visual review | Standardized alignment tolerance |
| Final Approval | Operator decision | Multi-stage QC sign-off |
Bulk Nanhe No. 9 envelope printing orders in China often require palletized packing to improve handling efficiency and reduce damage during warehouse and freight operations.
| Bulk Handling Aspect | General Method | Rongli Pallet Solution |
|---|---|---|
| Pallet Stability | Loose stacking | Strapped and aligned cartons |
| Load Distribution | Uneven weight | Balanced pallet layout |
| Forklift Safety | Unprotected edges | Reinforced pallet base |
Efficient coordination between production and logistics shortens overall delivery time. Nanhe No. 9 envelope printing orders in China are scheduled with delivery planning in mind to reduce idle waiting after manufacturing.
| Coordination Step | Standard Process | Rongli Coordination Method |
|---|---|---|
| Production Completion | Queue-based | Aligned with shipping window |
| Logistics Booking | Post-production | Pre-arranged logistics slots |
| Handover Time | Delayed | Immediate dispatch readiness |
Artwork review ensures production accuracy. Nanhe No. 9 envelope printing designs in China are checked against specifications and a digital proof is generated for client approval before printing.
| Verification Step | Standard Method | Rongli Proofing |
|---|---|---|
| Initial Check | Manual inspection | Automated format & color validation |
| Client Approval | Email approval | Interactive digital proofing |
| Revision Handling | Back-and-forth emails | Centralized revision tracking |
Order quantity directly influences per-unit pricing. Nanhe No. 9 envelope printing in China benefit from economies of scale, reducing cost per piece for larger orders.
| Order Size | Typical Unit Cost | Rongli Benefit |
|---|---|---|
| Small Orders | Higher | Flexible pricing for low volume |
| Medium Orders | Standard | Balanced cost-efficiency |
| Large Orders | Lower per-unit | Economies of scale applied |
Transparent pricing is our promise. These are the pricing questions clients in China ask most often.
| Question | Answer |
|---|---|
| Why does quantity affect price so much? | Setup/plate costs are fixed; higher quantity spreads the cost, reducing unit price dramatically in China. |
| Is VAT included in the quote? | Our quotes are VAT-exclusive. Final invoice will add 13% VAT in China. |
| Can I get a discount for large orders? | Yes, 1,000+ pcs get tiered discounts; annual contracts enjoy the best rates in China. |
| What payment methods do you accept? | Bank transfer, WeChat Pay, Alipay, PayPal (extra fee). 50% deposit required in China. |
| Is there a charge for revisions? | First 2 rounds free; additional rounds ¥200–500 depending on complexity in China. |
Meet the core needs of consumers, easy to pack, store, and open, and increase the attractiveness of products
Selected paper materials, lightweight, foldable, recyclable, environmentally friendly, and odorless
Match brand personality, align with product attributes, make the brand more recognizable, and create a charm from the outside in
Film coating UV、 Surface treatment processes such as hot stamping and pasting increase the high-end and exquisite quality of packaging boxes
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