SourcingAI

A4 copy paper 80 gsm manufacturers

I have found results from1000+products and200+suppliers aboutA4 copy paper 80 gsm

Shandong Xinshun Jiade Technology Co., Ltdmic-icon
Satisfies 3/3 of your requirements
White A4 Size Copy Paper 80 GSM 70 GSM Copy Paper

White A4 Size Copy Paper 80 GSM 70 GSM Copy Paper

US$1.50-1.90
8,000 Bags(MOQ)
Sample Available
Affordable 70 80 GSM Quality Premium Cheap A4 Copy Paper

Affordable 70 80 GSM Quality Premium Cheap A4 Copy Paper

US$1.80-1.90
1,000 Bags(MOQ)
Sample Available
Premium Smooth Texture White A4 Copy Paper 80 GSM

Premium Smooth Texture White A4 Copy Paper 80 GSM

US$1.50-1.90
8,000 Bags(MOQ)
Sample Available
Premium White A4 Copy Paper for Laser Printing, 80 GSM

Premium White A4 Copy Paper for Laser Printing, 80 GSM

US$1.80-1.90
1,000 Bags(MOQ)
Sample Available
Original A4 Size One 80 GSM 70 Gram Copy Paper

Original A4 Size One 80 GSM 70 Gram Copy Paper

US$1.50-1.90
8,000 Bags(MOQ)
Sample Available
Premium Quality for Laser Printers Paper 500sheets Cheap A4 Copy Paper 80GSM

Premium Quality for Laser Printers Paper 500sheets Cheap A4 Copy Paper 80GSM

US$1.80-1.90
1,000 Bags(MOQ)
Sample Available
Wholesale High Quality Children Handmade Lightweight 10 Colors Mix 80 GSM Standard A4 Copy Paper

Wholesale High Quality Children Handmade Lightweight 10 Colors Mix 80 GSM Standard A4 Copy Paper

US$1.70-1.80
8,000 Reams(MOQ)
Sample Available
Premium Quality A4 Copy Paper 80 GSM Double a Plant Wood Source 5 Pack Photocopy Bond Paper

Premium Quality A4 Copy Paper 80 GSM Double a Plant Wood Source 5 Pack Photocopy Bond Paper

US$1.50-1.90
8,000 Bags(MOQ)
Sample Available
Office Copy Paper 500 Sheets High Quality Wholesale Cheap Price A4 Copy Paper 80 GSM

Office Copy Paper 500 Sheets High Quality Wholesale Cheap Price A4 Copy Paper 80 GSM

US$1.80-1.90
1,000 Reams(MOQ)
Sample Available
Premium White A4 Copy Paper - 70/80 GSM Bulk Supply

Premium White A4 Copy Paper - 70/80 GSM Bulk Supply

US$1.50-1.90
8,000 Bags(MOQ)
Sample Available
A4 Copy Paper 80 GSM 70 Gram 75GSM Double White Printer Office Copy Paper

A4 Copy Paper 80 GSM 70 Gram 75GSM Double White Printer Office Copy Paper

US$1.50-1.90
8,000 Bags(MOQ)
Sample Available
Premium White A4 Copy Paper for Laser and Copier Printing

Premium White A4 Copy Paper for Laser and Copier Printing

US$1.80-1.90
1,000 Bags(MOQ)
Sample Available
High Quality A4 Copy Paper 80 GSM 70 Gram 75GSM White Printer Office Copy Paper

High Quality A4 Copy Paper 80 GSM 70 Gram 75GSM White Printer Office Copy Paper

US$1.80-1.90
8,000 Bags(MOQ)
Sample Available
Premium A4 Copy Paper - 70, 75, 80 GSM Options

Premium A4 Copy Paper - 70, 75, 80 GSM Options

US$1.50-1.90
8,000 Bags(MOQ)
Sample Available
Copy a White A4 Size Copy Paper 80 GSM 75g 70 GSM for Copier Laser Printing Ready to Ship Copy Paper A4

Copy a White A4 Size Copy Paper 80 GSM 75g 70 GSM for Copier Laser Printing Ready to Ship Copy Paper A4

US$1.50-1.90
8,000 Bags(MOQ)
Sample Available
Hot Selling A4 Double White Print Office Copy Paper 70GSM 80 GSM 500 Sheets Photocopy 2500 Ream Hard Copy Paper for Office

Hot Selling A4 Double White Print Office Copy Paper 70GSM 80 GSM 500 Sheets Photocopy 2500 Ream Hard Copy Paper for Office

US$1.80-1.90
1,000 Bags(MOQ)
Sample Available
High Quality A4 Paper A4 Copy Paper 80 GSM 70 Gram 75GSM Double White Printer Office Copy Paper

High Quality A4 Paper A4 Copy Paper 80 GSM 70 Gram 75GSM Double White Printer Office Copy Paper

US$1.50-1.90
8,000 Bags(MOQ)
Sample Available
Laser Print Fit A4 Color Copy Paper Colored Multipurpose Paper 70 75 80 GSM

Laser Print Fit A4 Color Copy Paper Colored Multipurpose Paper 70 75 80 GSM

US$1.70-1.80
1,000 Bags(MOQ)
Sample Available
Premium A4 White Printer Paper for Office Use, 70-80 GSM

Premium A4 White Printer Paper for Office Use, 70-80 GSM

US$1.80-1.90
1,000 Bags(MOQ)
Sample Available
Best Quality A4 Size Copy Copier Paper 80 GSM

Best Quality A4 Size Copy Copier Paper 80 GSM

US$1.80-1.90
1,000 Bags(MOQ)
Sample Available
Premium A4 Copy Paper 70 80 GSM for Office Use

Premium A4 Copy Paper 70 80 GSM for Office Use

US$1.50-1.90
8,000 Bags(MOQ)
Sample Available
Premium High Brightness A4 Copy Paper - Affordable 70 75 80 GSM

Premium High Brightness A4 Copy Paper - Affordable 70 75 80 GSM

US$1.80-1.90
1,000 Bags(MOQ)
Sample Available
Good Selling A4 Sheet Size Copier A4 White Copy Paper 80 75 70 GSM Manufacturer Supplier

Good Selling A4 Sheet Size Copier A4 White Copy Paper 80 75 70 GSM Manufacturer Supplier

US$1.50-1.90
8,000 Bags(MOQ)
Sample Available
Premium Quality High Brightness Copy Paper Cheap A4 Paper 70 75 80 GSM

Premium Quality High Brightness Copy Paper Cheap A4 Paper 70 75 80 GSM

US$1.80-1.90
1,000 Bags(MOQ)
Sample Available
Smooth Surface A4 Copy Color Paper 80 GSM (Grams per square meter)

Smooth Surface A4 Copy Color Paper 80 GSM (Grams per square meter)

US$1.70-1.80
1,000 Bags(MOQ)
Sample Available
Premium A4 Hard Copy Bond Paper for Office Use

Premium A4 Hard Copy Bond Paper for Office Use

US$1.80-1.90
8,000 Bags(MOQ)
Sample Available
A4 Copy Paper Printing Writing Office with Bamboo Pulp Roll Double Paper in Thailand 80 80g 500 80GSM 75 GSM China Price

A4 Copy Paper Printing Writing Office with Bamboo Pulp Roll Double Paper in Thailand 80 80g 500 80GSM 75 GSM China Price

US$1.80-1.90
1,000 Bags(MOQ)
Sample Available
Copy Office Paper One Brand A4 Paper 80 GSM

Copy Office Paper One Brand A4 Paper 80 GSM

US$1.85
1,000 Bags(MOQ)
Sample Available
A4 70GSM 80 GSM 500 Sheets Ream Print Office Copy Paper

A4 70GSM 80 GSM 500 Sheets Ream Print Office Copy Paper

US$1.80-1.90
1,000 Bags(MOQ)
Sample Available
QINGDAO CONVERTING PAPER CO., LTD.mic-icon
Satisfies 3/3 of your requirements
Copy Paper A4 80GSM Pulp Office Double a White A4 Copy Paper 80 GSM (210mm X 297mm)

Copy Paper A4 80GSM Pulp Office Double a White A4 Copy Paper 80 GSM (210mm X 297mm)

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
Heavy Duty 80GSM A4 Copy Paper Ideal for Double Side Printing Work

Heavy Duty 80GSM A4 Copy Paper Ideal for Double Side Printing Work

US$1.53-1.77
8,000 Pieces(MOQ)
Sample Available
Premium A4 Copy Paper 80 GSM for High-Quality Printing

Premium A4 Copy Paper 80 GSM for High-Quality Printing

US$1.53-1.77
8,000 Pieces(MOQ)
Sample Available
Premium A4 Copy Paper 80 GSM for Crisp, Clear Prints

Premium A4 Copy Paper 80 GSM for Crisp, Clear Prints

US$1.53-1.77
8,000 Pieces(MOQ)
Sample Available
A4 Copy Paper High Quality 80 GSM/ 75 GSM/70 GSM Printing Paper Copy Paper in Stock

A4 Copy Paper High Quality 80 GSM/ 75 GSM/70 GSM Printing Paper Copy Paper in Stock

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
Premium A4 Copy Paper 80GSM, 75GSM, 70GSM - Bulk Stock

Premium A4 Copy Paper 80GSM, 75GSM, 70GSM - Bulk Stock

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
Premium A4 White Copy Paper 80 GSM for High-Quality Printing

Premium A4 White Copy Paper 80 GSM for High-Quality Printing

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
Premium A4 Copy Paper - 100% Wood Pulp, 70/75/80 GSM

Premium A4 Copy Paper - 100% Wood Pulp, 70/75/80 GSM

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
Copy Paper 80 GSM 70 GSM for Copier Laser Printing Ready to Ship Copy Paper A4/Cheap A4 Paper 70 80 GSM

Copy Paper 80 GSM 70 GSM for Copier Laser Printing Ready to Ship Copy Paper A4/Cheap A4 Paper 70 80 GSM

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
A4 Copier/Copy Paper 80 GSM 70 GSM Printer Ream Paper A4 Supplier for Sale

A4 Copier/Copy Paper 80 GSM 70 GSM Printer Ream Paper A4 Supplier for Sale

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
Best Quality A4 Paper Wholesale Price Wholesale A4 70GSM Copypaper 500 Sheets/80 GSM A4 Copy Paper Office Paper

Best Quality A4 Paper Wholesale Price Wholesale A4 70GSM Copypaper 500 Sheets/80 GSM A4 Copy Paper Office Paper

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
A4 Paper One 80 GSM 70 Gram Copy Paper / A4 Copy Paper 75GSM / Double a A4 Copy Paper

A4 Paper One 80 GSM 70 Gram Copy Paper / A4 Copy Paper 75GSM / Double a A4 Copy Paper

US$1.53-1.77
8,000 Pieces(MOQ)
Sample Available
Cheap Price Copier Copy Paper / A4 Paper 80 GSM 70 GSM Copy Paper / Jk A4 Copy Paper 75GSM Copier Legal Size Papers

Cheap Price Copier Copy Paper / A4 Paper 80 GSM 70 GSM Copy Paper / Jk A4 Copy Paper 75GSM Copier Legal Size Papers

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
Lower Price Letter Size Legal Size 80g Copier Paper 70 75 80GSM Ream Printer A3 A4 Copy Paper in China Copy Paper

Lower Price Letter Size Legal Size 80g Copier Paper 70 75 80GSM Ream Printer A3 A4 Copy Paper in China Copy Paper

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
80g A4 Copy Paper Paper One White Pure Wood Pulp

80g A4 Copy Paper Paper One White Pure Wood Pulp

US$1.53-1.77
8,000 Pieces(MOQ)
Sample Available
Premium Quality 80 GSM A4 Paperone Copy Paper From China

Premium Quality 80 GSM A4 Paperone Copy Paper From China

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
Supply A4 Paper 80 GSM A4 Copy Papers Office A4 Paper for Sale Wholesale Price Contact Now

Supply A4 Paper 80 GSM A4 Copy Papers Office A4 Paper for Sale Wholesale Price Contact Now

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
A4 Paper Copier 500 Sheets Per Ream A4 Copy Paper OEM 70GSM 75GSM 80GSM Low Price

A4 Paper Copier 500 Sheets Per Ream A4 Copy Paper OEM 70GSM 75GSM 80GSM Low Price

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
A4 Paper 80 GSM 70 GSM Copy Pape Copier Legal Size Papers

A4 Paper 80 GSM 70 GSM Copy Pape Copier Legal Size Papers

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
White A4 Size Copy Paper 80 GSM 70 GSM for Copier Laser Printing Ready to Ship Copy Paper A4/Cheap A4 Paper 70 80 GSM

White A4 Size Copy Paper 80 GSM 70 GSM for Copier Laser Printing Ready to Ship Copy Paper A4/Cheap A4 Paper 70 80 GSM

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
Premium Quality A4 Copy Paper 80 GSM for High-Volume Printing

Premium Quality A4 Copy Paper 80 GSM for High-Volume Printing

US$1.53-1.77
8,000 Pieces(MOQ)
Sample Available
Premium A4 Office Copy Paper - 80 GSM, 500 Sheets

Premium A4 Office Copy Paper - 80 GSM, 500 Sheets

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
Bright White A4 Copy Paper 80 GSM for Office Printing

Bright White A4 Copy Paper 80 GSM for Office Printing

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
Premium Waterproof A4 Copy Paper 80 GSM with Free Sample

Premium Waterproof A4 Copy Paper 80 GSM with Free Sample

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
Premium A4 Copy Paper - 70, 75, 80 GSM Bulk Supply

Premium A4 Copy Paper - 70, 75, 80 GSM Bulk Supply

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
Premium Quality 80 GSM A4 Copy Paper - 500 Sheets Pack

Premium Quality 80 GSM A4 Copy Paper - 500 Sheets Pack

US$1.53-1.77
8,000 Pieces(MOQ)
Sample Available
Premium A4 Waterproof Copy Paper 80 GSM for Laser Printing

Premium A4 Waterproof Copy Paper 80 GSM for Laser Printing

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
Copy Paper A4 80 GSM, 75 GSM, 70 GSM 500 Sheets Thailand Manufacturer

Copy Paper A4 80 GSM, 75 GSM, 70 GSM 500 Sheets Thailand Manufacturer

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
Premium A4 Copy Paper 80 GSM 500 Sheets - Bulk Buy

Premium A4 Copy Paper 80 GSM 500 Sheets - Bulk Buy

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
Premium A4 Copy Paper - Versatile 70, 75, 80 GSM Options

Premium A4 Copy Paper - Versatile 70, 75, 80 GSM Options

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
High-Quality A4 Office Copy Paper - 70/75/80 GSM Options

High-Quality A4 Office Copy Paper - 70/75/80 GSM Options

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
Premium Affordable A4 White Copy Paper - 70, 75, 80 GSM Choices

Premium Affordable A4 White Copy Paper - 70, 75, 80 GSM Choices

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
High-Quality A4 Copy Paper - Cost-Effective 70 GSM and 80 GSM Packs

High-Quality A4 Copy Paper - Cost-Effective 70 GSM and 80 GSM Packs

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
High-Quality 80 GSM A4 Copy Paper for Professional Use

High-Quality 80 GSM A4 Copy Paper for Professional Use

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
Premium A4 Copy Paper 80 GSM for Office Printing

Premium A4 Copy Paper 80 GSM for Office Printing

US$1.53-1.77
8,000 Pieces(MOQ)
Sample Available
Premium A4 Copy Paper 80 GSM for Professional Offices

Premium A4 Copy Paper 80 GSM for Professional Offices

US$1.53-1.77
8,000 Pieces(MOQ)
Sample Available
Premium Quality A4 Copy Paper 70 80 GSM for Cost-Effective Printing

Premium Quality A4 Copy Paper 70 80 GSM for Cost-Effective Printing

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
Premium A4 Copy Paper 80 GSM for Quality Printing

Premium A4 Copy Paper 80 GSM for Quality Printing

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
Premium A4 Copy Paper - Versatile 70 75 80 GSM for Offices

Premium A4 Copy Paper - Versatile 70 75 80 GSM for Offices

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
SL Hot Sale Copy Paper 80 GSM 70 GSM Printer Ream Paper A4 Supplier

SL Hot Sale Copy Paper 80 GSM 70 GSM Printer Ream Paper A4 Supplier

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
High-Performance A4 Copy Paper 80 GSM - 500 Sheets for Business Use

High-Performance A4 Copy Paper 80 GSM - 500 Sheets for Business Use

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
2024 China Wholesale A4 Copy Paper 70/80 GSM Office Copy Paper 500 Sheets Legal Size White Office Paper

2024 China Wholesale A4 Copy Paper 70/80 GSM Office Copy Paper 500 Sheets Legal Size White Office Paper

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
A4 Paper 80 GSM Photo Copy Paper China Manufacturers Jumbo Lowest Price Roll Paper 80 Grams for A4 Photo Copy

A4 Paper 80 GSM Photo Copy Paper China Manufacturers Jumbo Lowest Price Roll Paper 80 Grams for A4 Photo Copy

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
Copy a A4 Paper Manufacturer in Thailand A4 Paper 80 GSM Copy a A4 Paper 80GSM Price Malaysia, Indonesia, Thailand, China

Copy a A4 Paper Manufacturer in Thailand A4 Paper 80 GSM Copy a A4 Paper 80GSM Price Malaysia, Indonesia, Thailand, China

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
Premium A4 Copy Paper - 80 GSM for Bulk Orders

Premium A4 Copy Paper - 80 GSM for Bulk Orders

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
Premium Quality A4 Copy Paper - 80 GSM 100% Pulp

Premium Quality A4 Copy Paper - 80 GSM 100% Pulp

US$1.53-1.77
8,000 Pieces(MOQ)
Sample Available
High-Quality A4 Copy Paper for Office Use - 70/75/80 GSM

High-Quality A4 Copy Paper for Office Use - 70/75/80 GSM

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
Premium Quality A4 80 GSM Paperone Copy Paper for Office Use

Premium Quality A4 80 GSM Paperone Copy Paper for Office Use

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
Superior Quality A4 Copy Paper 80 GSM for Copier Models

Superior Quality A4 Copy Paper 80 GSM for Copier Models

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
A4 Copy Paper 80 GSM - 500 Sheets for High-Quality Printing

A4 Copy Paper 80 GSM - 500 Sheets for High-Quality Printing

US$1.53-1.77
8,000 Pieces(MOQ)
Sample Available
SL Hot Sale Papier RAM A4 Copier/Copy Paper 80 GSM 70 GSM Printer Ream Supplier Paper A4

SL Hot Sale Papier RAM A4 Copier/Copy Paper 80 GSM 70 GSM Printer Ream Supplier Paper A4

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
Premium Quality A4 Copy Paper Sheets - 70/75/80 GSM Pure White

Premium Quality A4 Copy Paper Sheets - 70/75/80 GSM Pure White

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available
Chinese Factory Directly Sale Best Wholesale Price A4 70/75/80 GSM Copy Paper Sheets Pure White Stationery Paper for Sale

Chinese Factory Directly Sale Best Wholesale Price A4 70/75/80 GSM Copy Paper Sheets Pure White Stationery Paper for Sale

US$1.53-1.77
8,000 Ream(MOQ)
Sample Available

Sourcing guidance for A4 Copy Paper 80 Gsm

What are the key technical specifications to verify for high-quality 80 Gsm A4 copy paper?

When sourcing 80 Gsm paper, you must prioritize Whiteness (CIE), typically ranging from 145% to 167% for premium office use. Ensure the Opacity is ≥94% to prevent 'show-through' during double-sided printing. Additionally, verify the Moisture Content (4.0% - 5.0%) to prevent paper curling in high-speed laser printers, and check for Smoothness (Bendtsen) to ensure consistent toner transfer.

Which international compliance standards and certifications are essential for this category?

For global trade, look for ISO 9001 for quality management and ISO 14001 for environmental standards. If your market prioritizes sustainability, FSC (Forest Stewardship Council) or PEFC certifications are mandatory to prove the pulp is sourced from responsibly managed forests. For the European market, ensure the product meets EN 12281 standards for office paper performance.

How does the raw material composition affect the performance and price of the paper?

The highest quality paper is made from 100% Wood Pulp, which offers superior strength and brightness. Recycled pulp or mixed pulp options are more economical but may have lower whiteness and higher dust content, which can lead to printer jams. For B2B buyers, 100% Virgin Wood Pulp is the industry benchmark for high-speed photocopying and professional documentation.

What packaging requirements are standard for bulk cross-border shipments?

Standard packaging involves 500 sheets per ream, wrapped in moisture-proof PE-coated paper, with 5 or 10 reams per carton. For sea freight, ensure the cartons are stacked on fumigated pallets and secured with stretch wrap and edge protectors to prevent physical damage and humidity absorption during long-transit times.

Cross-Border Procurement & Risk Management for A4 Paper

What are the common risks when purchasing A4 paper internationally?

The primary risks include weight discrepancies (shipping 70 Gsm or 75 Gsm labeled as 80 Gsm) and moisture damage during transit. To mitigate this, always request a Pre-shipment Inspection (PSI) by third parties like SGS or Intertek to verify the actual grammage and sheet count before the final payment is released.

How can buyers negotiate better terms with large-scale paper mills?

Paper is a commodity sensitive to pulp price fluctuations. Negotiate based on Annual Volume Commitments rather than one-off spot buys to secure stable pricing. Request FOB (Free On Board) terms if you have a reliable freight forwarder, as this allows you to control the shipping costs, which can be a significant portion of the total landed cost for heavy paper products.

What transaction security measures should be taken for large volume orders?

Use secure payment methods such as Letter of Credit (L/C) for large-scale contracts or Escrow-based services provided by reputable platforms like Made-in-China.com. This ensures that funds are only released to the supplier once the Bill of Lading and Inspection Certificate are verified, protecting your capital against non-delivery.

What are the logistics considerations for shipping A4 paper to specific regions?

A4 paper is high-density cargo; a 20ft container typically holds 8,000 to 8,500 reams (approx. 20-21 tons). Be aware of Anti-dumping Duties that some countries (like the US or parts of the EU) may impose on paper from specific origins. Always check the HS Code (4802.56) against your local customs tariff schedule to calculate accurate import taxes.

Related queries