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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 White envelope printing envelope printing services provide professional, secure, and visually appealing solutions for corporate communications, office mail, and marketing campaigns. Each envelope is carefully produced to meet operational and branding requirements for businesses of all sizes.
Government agencies and institutions in China demand envelopes with strict compliance, security features, and archival quality. This parameter selection aligns with common regulatory and archival requirements.
| Parameter Category | Compliant Options | China Institutional Recommendations |
|---|---|---|
| Regulation Sizes | Legal 9-1/2×15 in, Foolscap 8-1/2×13-1/2 in, C4 window | C4 window envelopes are standard for China official correspondence with pre-printed address fields |
| Archival Materials | Acid-free 100% cotton 24 lb, lignin-free 28 lb bond, security paper with watermark | Acid-free cotton paper ensures long-term document preservation for China public records |
| Security Printing | Microtext, UV fluorescent fibers, chemically reactive ink | Chemically reactive ink reveals tampering attempts, required for many China official mailings |
| Protective Features | Redaction-friendly interior tint, anti-scan pattern, double-sided security printing | Anti-scan patterns prevent content imaging through envelopes used in China sensitive communications |
| Secure Closures | Water-soluble gum with security slits, pressure-sensitive permanent seal | Permanent pressure-sensitive seal prevents re-opening without visible damage for China classified documents |
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 |
White envelope printing in China provides multi-purpose envelope materials suitable for letters, brochures, and invitations. Materials like kraft paper, coated sheets, and cardstock are versatile, durable, and suitable for both professional and personal correspondence.
| Material | Standard Envelope | Rongli Custom Envelope |
|---|---|---|
| Kraft Paper | Basic brown paper | Versatile and strong for multi-purpose use |
| Coated Sheets | Regular coated paper | Smooth surface suitable for printing and mailing |
| Cardstock | Thin paper | Durable for documents and premium invitations |
Flexo remains a staple in China envelope manufacturing for speed and cost on standard stocks. It supports spot colors and basic CMYK approximations.
| Flexo Type | Color Options | China Efficiency & Uses |
|---|---|---|
| Standard Flexo | 1-4 spot colors | High-speed production; common for China return envelopes |
| Enhanced Flexo | CMYK process approximation | Finer screens; better for China imaged direct mail |
| UV Flexo | UV-cured spot inks | Instant dry; durable on China kraft stocks |
| Inline Flexo + Foil | Spot + metallic foil | Added premium; for China branded return mail |
| Water-Based Flexo | Eco spot colors | Sustainable choice in China green printing |
In China, White envelope printing supports international standard envelope sizes to meet global mailing requirements. ISO sizes ensure compatibility with international postage, mailing equipment, and document formats.
| Size | Typical Use | Rongli Custom Envelope |
|---|---|---|
| C4 (9" x 12.75") | A4 sheets unfolded | Fits international documents flat |
| C6 (4.5" x 6.5") | Invitations | Standardized for global mailing |
| DL (4.3" x 8.7") | Business letters | Popular format for international correspondence |
Precise positioning ensures envelopes process smoothly through China postal and inserting machines. Follow these guidelines to avoid jams or rejects.
| Position Parameter | Recommended Distance | China Automation & Postal Notes |
|---|---|---|
| From Bottom Edge | 12–15mm minimum, 5/8" (15.9mm) standard | Matches China postal barcode clear zone requirements |
| From Left Edge | 20–26mm (left-aligned) | Standard left placement for China address reading |
| Clear Zone Buffer | ≥1/8" (3mm) around address block | Prevents cutoff when insert shifts; critical for China high-speed lines |
| Vertical Alignment | Centered or top-aligned to insert | Test full movement range in China inserting trials |
| Right-Side Window Option | Mirrored placement | For right-flap envelopes in China special designs |
China innovative closures combine security, reusability, and interactivity for premium or functional applications.
| Specialty Closure | Innovative Feature | China Advanced Application |
|---|---|---|
| Resealable Zipper | Plastic zipper track | Repeated access; for China storage or sample return |
| Push-Button Magnetic | Snap magnetic lock | Secure yet easy; luxury China gift packaging |
| Adhesive-Free Lock Flap | Mechanical interlocking | No glue; eco-friendly premium in China |
| QR-Linked Tamper Seal | Seal with scannable code | Digital verification; innovative for China high-security |
| Hybrid Peel + Clasp | Peel for first open, clasp for reuse | Dual-function security in China multi-use designs |
Hospitals, clinics, and labs in China require confidential, hygienic, and compliant envelopes for patient records, test results, and billing.
| Requirement | Specification | China Healthcare Application |
|---|---|---|
| Size | DL window or C5 | Fits reports and bills; window for address privacy |
| Material | Security paper 100–120gsm | Anti-show-through; protects patient data |
| Security | Tamper-evident seal + tint | HIPAA-like compliance; for China medical confidentiality |
| Printing | Black + spot color logo | Clear, professional; minimal ink for hygiene |
| Closure | Permanent pressure seal | One-time secure closure for China results mail |
Blue line (or ozalid) proofs in China serve as the last checkpoint before bulk production, confirming layout and imposition.
| Confirmation Step | Purpose | China Final Check & Responsibility |
|---|---|---|
| Blue Line / Imposition Proof | Shows full sheet layout | Verify bleed, cut lines, window position in China |
| Client Final Sign-Off | Signed blue line or PDF | Client confirms no changes; production lock in China |
| Plate Proof Check | Digital plate preview | Final color registration; critical for China offset jobs |
| Binding & Finishing Mock | Sample glued envelope | Check flap alignment, sealing in China |
| Go-Ahead Authorization | Written/email approval | No liability after sign-off in China |
China digital and short-run printers support low minimum orders for custom envelopes, perfect for prototypes, limited editions, or seasonal needs without large commitments.
| Quantity Level | MOQ Requirement | China Best For & Cost Notes |
|---|---|---|
| 50–200 pcs | MOQ 100 (digital) | Prototypes or weddings; higher unit cost in China |
| 200–500 pcs | MOQ 200–300 | Small businesses; test market in China |
| 500 pcs | Standard low MOQ | Entry bulk; good for China startups and events |
| Digital Short Run | No strict MOQ | Per-piece pricing; flexible for China variable data |
| Low MOQ Premium | MOQ 100–200 | Foil/emboss allowed in China small luxury orders |
Paper choice in China directly affects 30–50% of total cost. Specialty stocks, higher GSM, and imported materials drive prices up significantly.
| Material Type | Relative Cost Level | China Price Impact & Reason |
|---|---|---|
| Standard White Bond 80–120gsm | Low | Most economical; local stock in China |
| Kraft / Recycled 120–140gsm | Medium | 10–25% higher; durable & eco in China |
| Coated Art / Silk 130–200gsm | Medium-High | Print quality premium; +20–40% in China |
| Cotton / Linen / Pearl 120–180gsm | High | Luxury feel; 50–100% premium in China |
| Imported Specialty (metallic/plantable) | Very High | Import + minimum order drives cost in China |
Continuous quality checks prevent defects. In China, White envelope printing orders undergo multiple inspections at key production stages to ensure accuracy and consistency.
| Inspection Point | Common Practice | Rongli QC |
|---|---|---|
| Printing Accuracy | End-of-run check | In-line verification |
| Folding & Cutting | Random sample | Every batch monitored |
| Final Review | Spot check | Full pre-packaging inspection |
Equipment usage affects White envelope printing cost structure in China. High-end presses, cutters, and finishing machines require depreciation, maintenance, and operational considerations.
| Equipment Type | Standard Cost | Rongli Optimization |
|---|---|---|
| Printing Press | Depreciation included | Efficient scheduling reduces per-unit cost |
| Cutting & Folding Machines | Maintenance fees | High throughput lowers unit cost |
| Finishing Equipment | Standard rate | Optimized batch runs for cost efficiency |
Choosing the right paper and finish is crucial. Here are the most common material questions we receive in China.
| Question | Answer |
|---|---|
| Which paper is most popular? | 120–140gsm white kraft for durability; 100–120gsm coated for vibrant printing in China. |
| Can I print full color on kraft paper? | Yes, white ink underlay + CMYK gives excellent results on kraft in China. |
| Is foil stamping expensive? | Yes, adds ¥0.3–1.0 per piece depending on area, but creates premium look loved in China. |
| Will lamination make it non-recyclable? | Standard film lamination no; we offer recyclable mono-material film in China. |
| Can I have inside printing? | Yes, inside printing available (extra cost) for security tint or branding 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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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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