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
With China Envelope printing factory specialized envelope production, companies receive professional, scalable mailing solutions. From daily office mail to confidential business documents, our envelopes combine quality, reliability, and brand-focused presentation for every order.
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 |
Envelope printing factory specialized in China can be classified according to envelope shape to suit different document types. Rectangular envelopes are ideal for letters, square envelopes are perfect for invitations or cards, and booklet envelopes are designed for reports or brochures. Selecting the right shape enhances usability and presentation.
| Shape | Generic Envelope | Rongli Custom Envelope |
|---|---|---|
| Rectangular | Most common letters | Custom dimensions for optimal fit and branding |
| Square | Event invitations | Elegant design for marketing or special events |
| Booklet | Reports or brochures | Optimized layout for multi-page inserts |
Envelope printing factory specialized in China offers secure sealing options for sensitive or important documents. From gummed and self-adhesive seals to reinforced peel-and-seal closures, each option ensures envelopes remain securely closed during transit while maintaining a professional appearance.
| Closure Type | Typical Envelope | Rongli Custom Envelope |
|---|---|---|
| Gummed | Basic manual sealing | Pre-gummed with strong adhesive |
| Self-Adhesive | Simple peel and stick | Secure and easy application for business letters |
| Peel-and-Seal | Temporary seal | Reinforced for fast, reliable closure |
In China, Envelope printing factory specialized 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 |
Lamination and coatings in China protect envelopes from wear, moisture, and fingerprints while enhancing appearance. Choose based on desired finish and durability level.
| Coating / Laminate | Finish Type | China Protection & Aesthetic Benefits |
|---|---|---|
| Gloss Lamination | High-shine film | Vibrant colors, waterproof; for China colorful promotional mail |
| Matte Lamination | Non-reflective soft finish | Professional look, fingerprint-resistant; common in China business |
| Soft-Touch Lamination | Velvet matte texture | Luxury hand-feel; premium China invitation standard |
| Aqueous Flood Coating | Thin water-based layer | Scuff protection without bulk; economical for China volume |
| UV Flood Coating | High-gloss durable seal | Scratch-resistant for China handled mailers |
In China, Envelope printing factory specialized offers envelopes with standard gummed closure. Moisture-activated adhesive provides secure sealing for letters, invoices, and business correspondence while maintaining a classic look.
| Closure Type | Common Use | Rongli Custom Envelope |
|---|---|---|
| Gummed Seal | Business letters | Reliable and professional sealing |
| Moisture Activated | Standard correspondence | Easy to seal while maintaining envelope integrity |
Expandable structures in China require reinforced sealing to handle increased thickness while maintaining security.
| Expandable Seal | Structure Feature | China Capacity & Strength Notes |
|---|---|---|
| Gusset Side Seal | Reinforced side adhesive | Handles 1–3 inch expansion; for China thick catalogs |
| Bottom Gusset Seal | Reinforced bottom flap | Supports heavy loads; used in China shipping envelopes |
| Accordion Gusset | Multi-fold sides + strong seal | High capacity; for China document storage mailers |
| Gusset + Peel-and-Seal | Expandable + adhesive strip | Versatile; common in China e-commerce padded bags |
| Reinforced Corner Seal | Extra tape at corners | Prevents burst in China heavy-duty use |
In China, Envelope printing factory specialized 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 documentation improves accountability. Envelope printing factory specialized inspection records in China allow manufacturers to trace production details and resolve issues efficiently if needed.
| Record Type | Basic Level | Rongli System |
|---|---|---|
| Inspection Logs | Optional | Standardized QC records |
| Batch Identification | Manual notes | Clear batch tracking |
| Issue Feedback | Informal | Documented corrective action |
Printed surfaces can be damaged by friction during transit. Envelope printing factory specialized packaging solutions in China focus on preventing scratches, scuffs, and ink transfer between envelopes.
| Surface Risk | Typical Issue | Rongli Protection Measure |
|---|---|---|
| Ink Rubbing | Direct contact | Interleaved protective layers |
| Scratching | Loose stacking | Aligned and compressed packing |
| Dust Contamination | Open packing | Sealed inner packaging |
Envelope printing prices in China are influenced by multiple variables, including order volume, material choice, printing complexity, and additional finishes. Understanding these factors helps clients optimize budgets while achieving desired quality.
| Factor | Impact Direction | China Typical Influence & Example |
|---|---|---|
| Order Quantity | Higher quantity → lower unit price | Bulk orders over 5,000 pcs reduce setup amortization in China |
| Paper Material & Weight | Premium/heavy stock → higher cost | 140gsm kraft vs 100gsm bond; 20–40% difference in China |
| Printing Method | Digital short-run → higher unit cost | Digital for <1,000 pcs vs offset for bulk; offset saves in China |
| Surface Finishes | Added foil/emboss → significant increase | Each finish adds 10–30% to total in China |
| Setup & Plate Fees | One-time fixed cost | Amortized over larger quantities in China offset jobs |
QC and final checks in China add a necessary buffer to ensure defect-free delivery, especially for premium or high-volume orders.
| QC Stage | Duration | China Process & Importance |
|---|---|---|
| In-Process Inspection | During production | Spot checks; prevents large defects in China |
| Pre-Delivery Sampling | 1–2 days | Random sample check; standard in China |
| Full Batch Final QC | 1–3 days | 100% visual for premium; time-consuming in China |
| Client On-Site Inspection | +1–2 days | Optional; for China high-value orders |
| Buffer for Rework | 1–3 days extra | If minor defects found in China |
Local factories in China invest in state-of-the-art equipment like Heidelberg presses, automatic die-cutters, and foil stamping lines, ensuring high precision and consistent quality.
| Equipment / Tech | Capability | China Production Advantage |
|---|---|---|
| Heidelberg Offset Press | High-speed, accurate registration | Superior color consistency for China branded envelopes |
| Automatic Envelope Forming Machine | High-volume gluing & folding | Reduces defects; supports China large runs |
| Laser Die-Cutting | Precise custom shapes | Complex designs without extra cost in China |
| Inline Foil & UV Units | One-pass finishing | Faster turnaround for premium China orders |
| Color Management System | ICC profile calibration | Pantone-accurate results in China |
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
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)
