Ir al contenido Kangchuang Paper manufactures and supplies high-quality copy paper in A4 (210×297mm) and US Letter (216×279mm) sizes in 70gsm and 80gsm grades, available as blank white copy paper for bulk wholesale or as custom-branded copy paper with your company logo, brand identity, or product messaging printed on ream wrapping and individual sheets. Our copy paper achieves 92–96 GE brightness, 94–97% opacity, and smooth double-sided print compatibility with all standard laser and inkjet printers, photocopiers, and digital printing equipment. We supply office supply distributors, corporate stationery buyers, hotel and hospitality chains, educational institutions, and private label copy paper brands requiring factory-direct pricing and minimum order flexibility not available from major brand distributors. Free sample reams shipped via DHL Express to USA buyers.
A4 and Letter — International and North American Markets: Both A4 (international standard) and US Letter (8.5×11 inch) are available in identical quality specifications. For distributors or corporate buyers serving multiple geographic markets, both formats are available from a single supplier in a single order — simplifying procurement.
Paper Weight (gsm): Grams per square metre — the mass of one square metre of paper. Higher gsm means heavier, thicker, stiffer paper. 70gsm is standard office copy paper; 80gsm is premium office paper. The weight perception of paper — how it feels in hand — is primarily determined by gsm. Heavier paper communicates quality but costs more and adds shipping weight.
Brightness (GE or ISO 2470): Measured as the percentage of blue-spectrum light reflected by the paper surface. A higher number means a whiter, brighter paper. Below 80 GE: budget/economy paper with visible cream or gray tone. 80–89 GE: standard commercial paper. 90–94 GE: premium office paper. 95+ GE: high-brightness or ultra-bright. Our paper achieves 92–96 GE — premium range.
Opacity (%): The percentage of light blocked by the paper. Low opacity (below 90%) causes show-through — content on one side of the paper is partially visible from the other side under backlight. For duplex printing, 94%+ opacity is recommended. Our 70gsm achieves 94% and 80gsm achieves 97% — preventing show-through on both sides.
Smoothness (Bekk seconds): Measures how smoothly air flows over the paper surface under controlled pressure. Higher Bekk seconds = smoother surface. 100–180 Bekk: suitable for laser printing. 50–100 Bekk: inkjet and uncoated commercial. Our 120–180 Bekk smoothness suits all standard office printing.
Ream Wrapper Printing: The most common form of branded copy paper. Your company logo, brand colors, product name, and contact information are printed on the ream wrapper (the paper sleeve that encloses 500 sheets). This creates a branded product visible on office shelves and in supply rooms. Minimum quantity: 5,000 reams per branded print run.
Sheet Watermark: An optional step-up from wrapper printing — a subtle watermark or letterhead printed on the paper sheets themselves. Common for corporate stationery programs where the paper itself communicates brand identity. Minimum quantity: typically 10,000 reams for watermarked sheet printing.
Custom Sheet Size: We cut copy paper to any non-standard size for specialty applications — legal size, half-letter, B4, B5, and fully custom dimensions. Useful for hospitality groups, airlines, and corporate buyers using non-standard stationery formats.
| SPECIFICATION | DETAILS |
| Sizes Available | A4 (210×297mm) | US Letter (216×279mm) | Legal (216×356mm) | Custom cut |
| Paper Weight | 70gsm | 80gsm | 75gsm on request |
| Brightness | 92–96 GE (ISO 2470) — premium white |
| Opacity | 70gsm: 94% | 80gsm: 97% |
| Smoothness | 120–180 Bekk seconds — smooth surface, laser/inkjet/copier compatible |
| pH Value | 7.0–8.5 (acid-free, alkaline reserve — archival quality) |
| Moisture Content | 4–5% at 23°C / 50% RH — consistent feeding, minimal static |
| Ream Count | 500 sheets per ream (standard) | 250 sheets / ream on request |
| Carton Count | 5 reams per carton (A4 80gsm standard) | 10 reams per carton (A4 70gsm) |
| Carton Weight | A4 80gsm: ~12.5kg per carton | A4 70gsm: ~11kg per carton |
| Custom Printing | Ream wrapper printing: min 5,000 reams | Sheet watermark: min 10,000 reams |
| MOQ | 1 carton (5 reams) for sample | 1 pallet (40 cartons) for production |
| Lead Time | 7–12 days (blank) | 15–20 days (custom printed wrapping) |
| Shipping | DHL Express (USA samples — free) | FOB Dongguan (production) |
| Certification | ISO 9001 | FSC-certified options available on request |
Both options are available. Ream wrapper printing (your logo and branding on the ream sleeve) is the most common form of custom printed copy paper — it creates a branded product visible in the supply room and at the point of use. Sheet watermark printing (a subtle pattern or text watermark on the paper sheets themselves) is available for premium corporate stationery programs. Both options require minimum order quantities — 5,000 reams for wrapper printing and 10,000 reams for sheet watermarks. Contact us for your specific branding requirements.
70gsm is the standard office copy paper weight — thinner, lighter, and less expensive per sheet. Suitable for everyday printing and photocopying where paper feel is not a primary concern. 80gsm is heavier and stiffer — it feels more substantial in hand and is preferred for presentations, formal correspondence, letterhead, and applications where paper quality communicates professionalism. 80gsm also has higher opacity (97% vs 94%) — reducing show-through on double-sided prints.
Our copy paper achieves 92–96 GE (ISO 2470) brightness — the premium range for office copy paper. This is above the 90 GE threshold that distinguishes premium from standard paper and produces noticeably brighter, higher-contrast printed documents compared to standard 80–88 GE papers. Brightness is measured and documented per batch.
Yes — our copy paper is engineered for compatibility with all standard office printing technologies: laser printers (HP, Brother, Xerox, Kyocera), inkjet printers (Epson, Canon, HP inkjet), and digital photocopiers/MFPs. The 120–180 Bekk smoothness and surface sizing treatment ensure consistent toner adhesion on laser output and controlled ink penetration on inkjet — preventing both toner flaking and inkjet bleeding.
Sample orders: 1 carton (5 reams, 2,500 sheets) at your specified size and gsm — shipped free via DHL Express to the USA within 7–10 days. Print test on your office equipment, evaluate brightness and opacity, check feeding performance on your copier — then decide on production volume.
Yes — FSC-certified copy paper is available for buyers who require certified chain-of-custody documentation for corporate sustainability reporting, retailer sustainability requirements, or government procurement compliance. FSC certification must be specified at the time of order inquiry as it affects our raw material sourcing for that production run.
Custom ream wrapper printing requires a minimum of 5,000 reams (approximately 1 full container load of A4 80gsm). This minimum is set by the economics of wrapper printing setup — below this quantity, the printing setup cost makes the unit economics unfavorable. For buyers requiring branded copy paper in smaller quantities, we can discuss alternative branding approaches such as sticker labels applied to standard wrappers.
Yes — US Legal size (216×356mm / 8.5×14 inch) is available in 70gsm and 80gsm in both blank and custom-branded formats. Legal-size reams are less commonly stocked by distributors — custom production from our factory is often the most reliable source for legal-size paper at wholesale quantities.
Copy paper for sea freight is packaged in sealed cartons (5 reams per carton for A4 80gsm, 10 reams per carton for A4 70gsm), palletized and stretch-wrapped. Each pallet holds approximately 40–50 cartons. A 20-foot sea freight container holds approximately 15 metric tons of A4 80gsm copy paper (approximately 750 cartons / 3,750 reams). We provide commercial invoice, packing list, certificate of origin, and quality test reports with every shipment.
Blank copy paper (standard ream wrapping): 7–12 business days from order confirmation. Custom-printed ream wrapper copy paper: 15–20 business days to allow for wrapper printing setup, approval, and ream wrapping production run. Sheet watermark orders: 20–25 business days. For recurring orders of the same specification, we can maintain standing inventory for faster repeat delivery.
Yes. We accept pallet-quantity orders (minimum 1 pallet, approximately 40 cartons). Smaller quantities ship via LCL (less-than-container-load) sea freight. LCL shipping is more expensive per kilogram than FCL (full container) but allows buyers to order smaller quantities. Sample orders (1 carton) ship via DHL Express.
Yes. We ship blank and custom-branded copy paper to office supply distributors, wholesale buyers, corporate stationery buyers, and private label copy paper brands throughout the United States. Samples ship via DHL Express at no charge. Production orders ship FOB Dongguan by sea freight. Contact us with your size, gsm, quantity, and any branding requirements for a complete quotation.
Kangchuang Paper specializes in high-quality industrial papers — sulfur-free, coated, release, and anti-rust. Tell us your requirements and we’ll recommend the right grade with fast turnaround.
