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China Kraft letter paper envelope printing printing capabilities provide versatile envelope solutions for businesses, including corporate mail, administrative correspondence, and marketing outreach. Each envelope is produced with high-quality materials and precision printing for consistent results.
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 |
These adaptable envelope types in China serve multiple roles—from daily office use to seasonal promotions—offering broad customization to fit changing needs.

| Envelope Type | Versatile Features | China Multi-Use Customization |
|---|---|---|
| Convertible Booklet-Catalog | Switchable open side/end | Adapts to China different mailing contents; easy flap redesign |
| Re-Closable Peel & Seal | Reusable adhesive strip | Useful for China return mailers or sample kits |
| Multi-Window Flexible | Adjustable or multiple window positions | Supports China varied addressing formats; digital variable windows |
| Colored Stock All-Purpose | Range of bright or pastel colors | Quick brand differentiation for China seasonal or departmental mail |
| Hybrid Digital/Offset Ready | Compatible with both print methods | Scales from small to large runs in China flexible printing environments |
Envelope sizes in China follow a mix of international ISO standards, US commercial formats, and local Chinese preferences. Choosing the right size ensures compatibility with content, postage rules, and mailing machines. This table covers the most frequently used sizes with dimensions and typical China applications.
| Size Name / Code | Dimensions (mm) | China Common Uses & Notes |
|---|---|---|
| DL (ISO) | 110 × 220 | Standard for China business letters and invoices; fits A4 folded in thirds |
| C5 (ISO) | 162 × 229 | Popular for China A5 documents or unfolded cards; widely accepted by post offices |
| C4 (ISO) | 229 × 324 | Ideal for China full A4 sheets without folding; common in corporate mailings |
| #10 Commercial (US) | 105 × 241 | Most used US-style size in China international business; fits standard checks |
| Chinese Mid-Style DL | 110 × 220 (same as ISO DL) | Default for China domestic mail; consistent with local postal automation |
Kraft letter paper envelope printing in China offers durable materials for envelopes, suitable for high-volume mailing and heavy documents. Thick cardstock, reinforced paper, and coated sheets enhance strength and prevent tearing during transport, ensuring contents remain safe and professional.
| Material | Standard Envelope | Rongli Custom Envelope |
|---|---|---|
| Thick Cardstock | Thin office paper | Sturdy and professional for important mail |
| Reinforced Paper | Basic paper | Enhanced durability for transit protection |
| Coated Sheets | Matte standard paper | Protective coating with smooth finish |
Color accuracy is crucial in China branding. CMYK offers versatility for photos and gradients, while Pantone spot ensures exact matches for logos. This table compares schemes with compatible printing methods.

| Color Scheme | Compatible Methods | China Pros & Recommended Uses |
|---|---|---|
| CMYK Process | Offset, digital, enhanced flexo | Full-color images and gradients; great for China promotional envelopes |
| Pantone Spot | Offset, flexo, screen | Precise brand colors; essential for China corporate identity |
| CMYK + Pantone Hybrid | Offset with spot stations | Rich colors + exact match; popular in China multi-color branding |
| Metallic Pantone | Offset or foil-assisted | Shiny effects; elevates China luxury event mail |
| Gradient Blends | Digital or offset | Smooth transitions for modern China designs |
China printers apply post-processing to enhance durability, aesthetics, and functionality. From protective coatings to decorative effects, these steps complete the custom envelope. Below are widely used options with practical recommendations.
| Technique | Main Benefit | China Application & Notes |
|---|---|---|
| Soft-Touch Lamination | Velvet-like matte feel | Luxury tactile experience; favored for China premium invitations |
| Blind Embossing | Raised texture without ink | Subtle sophistication; used in China minimalist branding |
| Registered Embossing + Foil | Precise raised metallic | High-end detail; for China logo-centric corporate mail |
| Aqueous Coating | Thin protective layer | Scuff-resistant without high gloss; economical for China bulk runs |
| Window Patching | Transparent film application | Address visibility for China automated mailing |
Kraft letter paper envelope printing in China offers clasp envelopes with metal or plastic fasteners for secure, reusable sealing. Commonly used for confidential documents, these closures provide both security and professional appearance.
| Closure Type | Standard Envelope | Rongli Custom Envelope |
|---|---|---|
| Metal Clasp | Office files | Durable and secure for multiple openings |
| Plastic Clasp | Internal documents | Reusable and secure for confidential files |
In China, Kraft letter paper envelope printing offers standard envelope printing colors such as white, cream, and kraft. These classic tones suit professional correspondence, invoices, and everyday business mailings.
| Color Option | Common Use | Rongli Custom Envelope |
|---|---|---|
| White | Business letters | Professional and versatile for all purposes |
| Cream | Invitations | Elegant and soft aesthetic for premium feel |
| Kraft Brown | Mailing and packaging | Durable and eco-friendly look |
In China, Kraft letter paper 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 |
Proofing costs and timelines in China vary by complexity, number of revisions, and rush requirements. Clear expectations prevent surprises.
| Factor | Influence on Cost/Timeline | China Typical Range & Advice |
|---|---|---|
| Number of Revisions | Free up to 2–3 rounds | Additional rounds chargeable after approval in China |
| Physical Sample Quantity | 1–5 pcs standard | Extra samples increase cost; 3–7 days in China |
| Rush Service | 50–150% surcharge | Same-day digital / next-day sample possible in China |
| Complex Finishes | Foil/emboss proof extra | Requires dedicated sample; 5–10 days in China |
| Final Sign-Off Delay | Client response time | Production holds until approval in China |
China eco-conscious clients often order recycled or plant-based envelopes. MOQ may be higher due to certified material minimums, but bulk supports sustainability goals.
| Eco Type | Typical MOQ | China Sustainability & Quantity Notes |
|---|---|---|
| Recycled Kraft | MOQ 1,000–2,000 | Material batch size; good for China green brands |
| FSC-Certified Paper | MOQ 800–1,500 | Certification minimum; supports China corporate ESG |
| Plantable Seed Paper | MOQ 500–1,000 | Specialty run; for China promotional giveaways |
| Compostable Film Window | MOQ 2,000+ | Biodegradable patch batch; higher in China |
| Eco Bulk Commitment | 10,000+ annual | Best eco-unit price for China large green clients |
Non-standard sizes, custom dies, windows, gussets, or special flaps in China raise prices due to tooling, material waste, and production adjustments.
| Customization Type | Cost Multiplier | China Reason & Typical Range |
|---|---|---|
| Standard Size (DL/C5/#10) | Base (1x) | No extra tooling; most economical in China |
| Custom Window Placement | +5–15% | Die adjustment; common in China |
| Die-Cut Shape / Irregular | +20–50% | Custom die cost; amortized over quantity in China |
| Gusseted / Expandable | +15–30% | Extra forming & sealing; for China thick content |
| Complex Multi-Feature | +50–100%+ | Combined tooling & waste in China |
Large or annual orders in China often use phased production and delivery to manage inventory, cash flow, and updates while maintaining consistent lead times.
| Phased Approach | Per-Release Time | China Benefit & Typical Use |
|---|---|---|
| Initial Batch + Follow-Ups | 7–10 days per release | Test quality before full run; common in China |
| Monthly Releases | 5–8 days per batch | Steady supply; for China corporate contracts |
| Seasonal Peak Delivery | Pre-booked slots | Avoid delays in China wedding/Q4 peaks |
| Stored & On-Demand Release | 2–4 days per call-off | Printer holds stock; flexible for China clients |
| Annual Framework Delivery | Consistent per batch | Locked lead time for China long-term partners |
Local factories in China maintain large-scale capacity with multiple lines, ensuring on-time delivery even during peak seasons or large orders.
| Capacity Aspect | Scale / Feature | China Reliability Benefit |
|---|---|---|
| Daily Output | 50,000–200,000 pcs | Handles China urgent bulk without delay |
| Multiple Production Lines | 5–10 parallel lines | Parallel processing; no single-point failure in China |
| 24/7 Operation Option | Shift work available | Rush orders possible; key for China events |
| Backup Machines | Redundant equipment | Breakdown-proof; stable delivery in China |
| Peak Season Buffer | Extra staff & lines | No backlog during Q4/wedding peaks in China |
Clients receive professional assistance for any issues with Kraft letter paper envelope printing in China, from usage guidance to troubleshooting problems during implementation.
| Support Type | Industry Standard | Rongli Service |
|---|---|---|
| Email & Phone | Limited hours | 24/7 multi-channel support |
| Guidance Documentation | Basic manuals | Detailed step-by-step guides |
| Problem Resolution | Reactive | Proactive troubleshooting & follow-up |
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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