Welcome to the official website of Rongli Printing Factory
Rongli Factoryfor you
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
上一张
下一张
Make your brand unforgettable from the very first touch — the envelope. In China, our custom Confidential envelope printing and processing process solutions help you create packaging that feels intentional and premium. Premium materials, precise craftsmanship, elegant details, and customization options combine to deliver envelopes that command attention and respect. Custom envelopes ensure your brand arrives looking professional.
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, Confidential envelope printing and processing process offers multiple envelope shapes tailored for specific purposes. Standard rectangular envelopes are suitable for routine business letters, square envelopes for invitations or marketing materials, and booklet envelopes for multi-page reports. Customization ensures each envelope meets both functional and visual requirements.
| Type | Standard Envelope | Rongli Custom Envelope |
|---|---|---|
| Rectangular | Common correspondence | Custom size and branding for each document |
| Square | Occasional invitations | Premium design for marketing or events |
| Booklet | Reports or manuals | Optimized for multi-page inserts and presentations |
Confidential envelope printing and processing process in China provides envelope sealing methods designed to protect contents during delivery. Gummed, self-adhesive, and peel-and-seal envelopes prevent accidental openings, ensuring that letters, contracts, and sensitive documents reach recipients safely.
| Sealing Method | Common Envelope | Rongli Custom Envelope |
|---|---|---|
| Gummed | Manual sealing | Pre-gummed and easy to seal securely |
| Self-Adhesive | Peel strip | Strong adhesive for professional letters |
| Peel-and-Seal | Temporary seal | Reinforced for secure, reliable closure |
In China, Confidential envelope printing and processing process offers various material options to match different purposes. Standard paper, premium cardstock, and recycled materials are commonly used. Choosing the right material ensures durability, professional appearance, and suitability for your documents or mailings.
| Material Type | Generic Envelope | Rongli Custom Envelope |
|---|---|---|
| Standard Paper | Typical office letters | Smooth texture with professional look |
| Cardstock | Occasional use | Thicker, premium feel for important mail |
| Recycled Paper | Eco-friendly option | High-quality recycled paper with sturdy texture |
Offset delivers superior quality in China for detailed designs. It handles complex color schemes like CMYK + spot and metallic effects.
| Offset Variant | Color Scheme | China Quality & Volume Notes |
|---|---|---|
| Sheet-Fed Offset | Full CMYK + 2 spot | High detail; suits China medium-to-large runs |
| Web Offset | CMYK process | High volume; efficient for China bulk stationery |
| Offset + Metallic | Pantone metallic + CMYK | Luxury shine; for China premium invitations |
| Offset Conversion | Full-bleed CMYK | Custom shapes; enables China unique designs |
| LED-UV Offset | CMYK + instant cure | Eco-friendly fast dry in China |
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 |
Window envelopes in China enable automated addressing by displaying recipient details through a transparent patch, saving time and reducing errors. Key options include window size, position, shape, and patch material. Proper design ensures postal compliance and smooth machine insertion. The table below summarizes standard customizable features with China recommendations.
| Window Option | Standard Specifications | China Design Tips & Applications |
|---|---|---|
| Window Size | 90×40mm to 110×45mm (common rectangular) | Standard 90×45mm fits most China address blocks; ensure 5–10mm clear margin around text |
| Window Position | Left-aligned, 15–26mm from left/bottom edge | Left 26mm from bottom common in China for postal automation; avoid edge <15mm to prevent patch peeling |
| Patch Material | Clear polystyrene or cellophane film | Non-tinted clear film for China OCR readability; thickness 0.03–0.05mm for durability |
| Single vs Double Window | Single for address, double for reply | Double window ideal for China billing/remittance; align both precisely with insert |
| Custom Shape | Rectangular, rounded corners, oval | Rounded corners reduce snags in China high-volume inserting machines |
For automated production and heavy-duty use in China, industrial seals offer speed, strength, and machine compatibility.
| Industrial Seal | Activation Method | China Efficiency & Application |
|---|---|---|
| Hot-Melt Adhesive Seal | Machine heat activation | Ultra-strong; for China automated fulfillment lines |
| Pressure-Sensitive Permanent | Instant heavy-duty bond | No heat needed; suits China high-speed inserting |
| Double-Sided Tape Liner | Industrial-grade tape | Reinforced closure; for China catalog and shipping envelopes |
| Heat-Sealable Flap | Thermal sealing jaws | Seamless bond; common in China poly mailer hybrids |
| Reinforced Gusset Seal | Extra adhesive on sides | Bulky content security in China logistics |
Schools and educational institutions in China require affordable, high-volume envelopes for report cards, notices, admissions, and event invitations.
| Need | Suggested Spec | China Education Sector Benefit |
|---|---|---|
| Size | DL / C5 / A5 wallet | Fits report cards and letters; easy for student handling |
| Material | 80–100gsm offset or recycled | Cost-effective; eco-friendly for China school sustainability goals |
| Printing | Full color school logo + spot color | Branding consistency across China campuses |
| Closure | Peel-and-seal or gummed | Quick sealing for China end-of-term mailouts |
| Special | Window option for address | Saves addressing time for China large student 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 |
Bulk Confidential envelope printing and processing process 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 |
Clear delivery timelines help customers plan ahead. Confidential envelope printing and processing process suppliers in China provide estimated delivery schedules based on confirmed specifications and production capacity.
| Timeline Stage | Unclear Practice | Rongli Transparency Standard |
|---|---|---|
| Production Start | Not specified | Confirmed after order approval |
| Completion Date | Rough estimate | Schedule-based forecast |
| Shipping Date | Variable | Planned dispatch window |
From initial inquiry to final delivery in China, the entire process usually spans 10–25 days, depending on proofing rounds, production complexity, and shipping.
| Project Phase | Typical Duration | China Cumulative Timeline & Tips |
|---|---|---|
| Inquiry → Quote | 1 day | Fast response; start clock in China |
| Design & Proofing Rounds | 3–10 days | Client speed major variable in China |
| Production Cycle | 5–12 days | Core manufacturing; buffer included in China |
| QC & Packaging | 1–3 days | Final assurance; non-negotiable in China |
| Delivery to Client | 1–5 days | Total 10–30 days end-to-end in China |
Labor costs impact total Confidential envelope printing and processing process pricing in China. Skilled operators, complex processes, and quality control contribute to the overall production expense.
| Labor Factor | Typical Cost | Rongli Efficiency |
|---|---|---|
| Printing Operation | Average hourly rate | Optimized workflow reduces hours |
| Finishing & Assembly | Manual intensive | Semi-automated assembly saves time |
| Quality Control | Random sampling | Integrated inline QC reduces errors |
Questions about adding foil, embossing, lamination, UV, etc., and their impact.
| Question | Answer |
|---|---|
| Can I add foil stamping? | Yes, gold/silver/holographic; MOQ 500–1,000 pcs recommended. |
| What is soft-touch lamination? | Velvet-like matte film; adds luxury feel and fingerprint resistance. |
| Does embossing increase cost? | Yes, +20–40%; requires heavier paper (≥200gsm). |
| Can I do spot UV on kraft paper? | Yes, but best on coated stocks; adds glossy highlights. |
| How many finishes can I combine? | Up to 3–4 (e.g., foil + emboss + spot UV); each adds cost and time. |
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
Related Products
/ Relevant product
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
WeChat
What APP
©2026 Rongli Printing Co., Ltd. All rights reserved Rongli Printing Factory Address: Floors 1-3, Building 7, Lane 697, Lingshi Road, Shanghai (Factory Building)
