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Fixed hotline：021-66317519
Service Hotline：181-0186-9996
Fixed hotline：021-66317519
Service Hotline：181-0186-9996
Service Hotline：181-0186-9996
email：chengxunys@163.com
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China Kraft paper confidential envelope printing envelope solutions combine quality printing, durability, and professional design for all corporate and commercial mailing needs. Our services include office correspondence, confidential document mailing, marketing campaigns, and brand-focused envelope production. Each Kraft paper confidential envelope printing envelope produced in China ensures consistent output, reliable delivery, and an impressive appearance that reflects your business professionalism. Whether handling daily office mail or large-scale promotional campaigns, our envelope printing services provide efficiency, precision, and branding consistency to enhance your company communications.
Choosing the right core parameters is the foundation of high-quality custom envelope production in China. These decisions affect everything from structural integrity and visual appeal to postage compatibility and final cost. This group focuses on frequently selected combinations suitable for mid-to-high volume business and promotional use in China.
| Parameter Category | Popular Choices | China Practical Notes & Suggestions |
|---|---|---|
| Envelope Format & Orientation | Landscape DL, Portrait C5, Square 160×160mm, Monarch (191×98mm) | Landscape DL remains the top choice for China corporate mailers; Square format gains popularity for creative invitations |
| Paper Type & GSM | 100–130g textured laid paper, 110–140g FSC-certified kraft, 120g silk-coated | Textured laid paper gives a sophisticated feel for China professional services; FSC kraft appeals to eco-conscious brands |
| Color Printing Method | 1–2 spot colors, 4-color process + 1 spot, digital full-color short run | Digital full-color is ideal for China small-to-medium branded runs with fast turnaround |
| Finishing Techniques | Soft-touch lamination, blind embossing, edge painting, spot gloss UV | Soft-touch lamination + blind embossing creates a luxury tactile experience popular in China luxury retail envelopes |
| Closure Style | Remoistenable gum, latex seal, clasp closure, magnetic closure | Latex seal offers clean, quick sealing for China high-volume mailing; magnetic closure suits premium gift packaging |
For unique projects in China, specialty envelope types provide endless customization potential, including non-standard shapes, interactive elements, and premium materials.
| Envelope Type | Special Features | China Niche Applications & Options |
|---|---|---|
| Euro Flap Invitation | Curved or deep flap, elegant | High-end China weddings; customize with die-cut hearts or metallic |
| Expanding Gusset Catalog | Side gussets for thickness | Accommodates China thick catalogs; add reinforced bottoms |
| Remittance Double Window | Two windows for statement + reply | Streamlines China payment processing; security tint standard |
| Plantable / Eco Specialty | Seed-embedded paper | Appeals to China green brands; customize with embedded flowers |
| Die-Cut Custom Shape | Irregular outlines, branded forms | Standout for China launches; full conversion from flat sheets |
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 |
For protective and rugged envelopes in China, kraft-based papers dominate due to strength and eco-appeal. Weights vary by protection level needed. This selection focuses on durable materials.
| Material | Weight (GSM) | China Durability & Use Notes |
|---|---|---|
| Standard Kraft | 120–140 GSM | High tear resistance; standard for China parcel and document protection |
| Heavy Kraft Board | 200–300 GSM | Thick and rigid; used in China heavy-duty shipping envelopes |
| Bleached Kraft | 100–130 GSM | Whiter appearance; balances strength and print quality in China |
| Recycled Kraft | 110–140 GSM | Eco version with similar toughness; growing in China sustainable logistics |
| Poly-Lined Kraft | 120–160 GSM base | Water-resistant for China outdoor or humid shipping |
Pantone spot colors ensure brand consistency in China. Ideal for logos and exact matches, often combined with foil or UV.
| Spot Color Type | Method Compatibility | China Branding & Effect Benefits |
|---|---|---|
| Standard Pantone | Offset, flexo, screen | Exact corporate match; essential for China identity |
| Metallic Pantone | Offset or foil | Shiny accents; elevates China luxury mail |
| Fluorescent Pantone | Screen or offset | Bright glow; for China eye-catching promotions |
| Pantone Pastel | Offset | Soft tones; suits China elegant invitations |
| Pantone + CMYK | Offset hybrid | Rich + precise for China multi-element designs |
Embossing and debossing add dimension and tactility to China envelopes, creating memorable unboxing experiences. These work best on heavier stocks.
| Texture Process | Effect Description | China Tactile & Branding Applications |
|---|---|---|
| Blind Embossing | Raised pattern, no ink | Subtle luxury; elegant for China corporate thank-yous |
| Registered Embossing | Raised over printed area | Enhanced depth; for China logo emphasis |
| Debossing | Recessed impression | Modern minimalism; suits China tech branding |
| Micro-Embossing | Fine detailed texture | Intricate patterns; high-end China invitations |
| Pattern Embossing | Overall background texture | All-over elegance for China premium mail |
Design must account for insert movement to keep address visible. China best practices include mock-ups and tolerance checks.
| Compatibility Factor | Guideline | China Testing & Prevention Tips |
|---|---|---|
| Insert Shift Tolerance | ±2–3mm max | Test full insert movement; avoid cutoff in China machines |
| Address Block Buffer | ≥5mm inside window edges | Prevents partial hiding; standard China automation rule |
| Paper Thickness Match | Insert 80–120gsm, envelope 100–140gsm | Balanced rigidity; reduces jamming in China inserting |
| Mock-Up Folding Test | Simulate final fold/insert | Essential step; catch alignment issues early in China |
| Barcode Clear Zone | No overlap with window | Postal compliance for China automated rates |
Reusable closures in China suit documents, files, or gifts that require multiple openings. These structures prioritize convenience without sacrificing security.
| Closure Design | Opening Mechanism | China Reusability & Application |
|---|---|---|
| String-and-Button Clasp | Wrap string around button | Highly reusable; classic for China legal files and portfolios |
| Hook-and-Loop (Velcro-style) | Press-to-close tabs | Quick open/close; suits China sample kits or repeat-use mailers |
| Magnetic Closure | Hidden magnets in flap | Sleek, no visible hardware; premium for China gift envelopes |
| Elastic Cord Tie | Stretch cord loop | Flexible, durable; used in China expandable gusset envelopes |
| Interlocking Tab | Slot-and-tab fold | No adhesive needed for China eco-friendly reusable designs |
In China, Kraft paper confidential envelope printing offers lightweight paper envelopes suitable for mass mailings. Reduced weight lowers postage costs while maintaining sufficient strength for standard correspondence.
| Material | Common Use | Rongli Custom Envelope |
|---|---|---|
| 70gsm Paper | Bulk letters | Economical and practical for high-volume mail |
| 80gsm Paper | Invoices & notices | Lightweight but sturdy |
| 90gsm Paper | Marketing mail | Affordable yet professional feel |
International orders in China require additional steps for time zone differences, shipping samples, and cross-border communication.
| International Step | Method | China Logistics & Time Notes |
|---|---|---|
| Time-Zone Coordinated Review | Scheduled Zoom calls | Bridge time difference; common for China global clients |
| Shipping Physical Sample | DHL/FedEx express | 3–7 days delivery; extra cost for overseas in China |
| Remote Color Approval | ICC profile + calibrated photo | Avoids shipping delays; widely used in China |
| Digital Sign-Off Portal | Secure e-signature platform | Legally valid globally; standard for China export orders |
| Final Overseas Confirmation | Email + signed PDF | Production starts post-confirmation in China |
Many China printers offer negotiation or flexible MOQ for long-term clients, startups, or trial orders, balancing setup costs with relationship building.
| Negotiation Type | Possible Adjustment | China Eligibility & Outcome |
|---|---|---|
| First-Time Client Trial | MOQ reduced 20–50% | Build trust; common in China for new accounts |
| Repeat Customer Discount | Lower MOQ on reorders | After 2–3 orders; loyalty benefit in China |
| Startup / SME Program | MOQ 300–500 | Special rates; supports China small businesses |
| Combined Order | Multiple designs share MOQ | Economical for China agencies with variants |
| Annual Commitment | Flexible per-release MOQ | Best overall pricing for China long-term partners |
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 |
Festivals, Chinese New Year, and year-end in China cause factory shutdowns and backlog, extending lead times significantly. Plan orders accordingly.
| Period | Lead Time Extension | China Impact & Advice |
|---|---|---|
| Chinese New Year (Jan/Feb) | +7–20 days | Factory closure 7–15 days; book early in China |
| National Day Golden Week (Oct) | +3–7 days | Short shutdown; backlog in China |
| Q4 Year-End Rush | +5–10 days | Corporate demand surge; capacity tight in China |
| Summer Low Season | Shorter lead time | Lower workload; good for China planning |
| Pre-Holiday Buffer | Recommend +7–10 days | Avoid delays for China critical deadlines |
Local factories in China provide tighter quality control through on-site supervision, immediate corrections, and consistent standards across batches.
| Quality Aspect | Control Method | China Consistency Benefit |
|---|---|---|
| On-Site QC Teams | Multi-stage inspection | Immediate defect correction; high pass rate in China |
| Color Calibration Lab | Spectrophotometer checks | Delta E <2 across batches; reliable for China brands |
| Batch-to-Batch Matching | Same machine/line priority | Uniform color/paper; critical for China reorders |
| Client On-Site Visit | Factory inspection allowed | Direct oversight; builds trust in China |
| ISO 9001 / Quality Cert | Certified processes | International standard assurance in China |
Answers to less common but important questions about special requirements, international orders, and more.
| Question | Answer |
|---|---|
| Can I use my own design files? | Yes, but we check for printability; adjustments may incur fees. |
| Do you print for international shipping? | Yes, export-ready with proper packaging; FOB China available. |
| What about eco-certifications? | FSC, recyclable materials; we provide certificates upon request. |
| Can I combine different designs in one order? | Yes, shared setup; MOQ per design, total counts for discount. |
| What if I need very small quantity? | Digital printing supports 50–200 pcs; higher unit price but possible. |
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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Fixed hotline：+86-021-66317519
Service Hotline：181-0186-9996
email address：chengxunys@163.com
Address: Floors 1-5, Building 30, Lane 2, Suide Road, Putuo District, Shanghai
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