Meaning of characters and numbers on Fertilizer PP woven bag

Understanding Characters and Numbers on Fertilizer PP Woven Bags: A Guide to Sourcing from Vietnam

In the global agricultural market, the packaging of fertilizer is as critical as the product itself. For importers and distributors, the PP woven bag—also known as a polypropylene sack, WPP bag, or woven poly bag—is the industry standard for durability and protection. However, the characters, numbers, and symbols printed on these bags are not just branding; they are vital data points for safety, compliance, and usage.

As a leading hub for high-quality packaging, Vietnam has become a primary destination for sourcing custom-printed fertilizer bags. Companies like NAPCO (Nghe An Packaging Joint Stock Company) excel in providing precision printing and robust materials that meet international standards.

Decoding the Printing on Fertilizer Poly Sacks

When you look at a high-quality woven polypropylene sack from a Vietnamese manufacturer, the information is typically divided into three categories:

1. The N-P-K Ratio (The Core Numbers)

The most prominent numbers on any fertilizer bag are the three digits representing the N-P-K ratio (Nitrogen, Phosphorus, and Potassium).

• What it means: A bag marked “10-20-10” contains 10% Nitrogen, 20% Phosphorus, and 10% Potassium by weight.

• SEO Tip: Buyers often search for “custom NPK fertilizer bags” or “branded agricultural sacks.” Vietnamese manufacturers like NAPCO use high-definition Flexo or BOPP lamination to ensure these numbers remain legible even after months of storage in humid environments.

2. Net Weight and Specifications

International trade requires precise weight declarations. You will commonly see:

• Net Weight: Usually 25kg or 50kg for standard WPP bags.

• Gross Weight: Includes the weight of the bag itself.

• Batch Numbers: Vital for traceability in case of quality issues.

3. Safety Symbols and Handling Characters

Fertilizers can be chemically volatile. Therefore, woven plastic bags must feature specific international symbols:

• The “Keep Dry” Umbrella: Vital for hygroscopic fertilizers like Urea.

• The “Use No Hooks” Symbol: Crucial for preventing tears in the polypropylene weave.

• UN Hazard Classes: If the fertilizer is classified as hazardous (like certain Ammonium Nitrates), the bag will feature a UN number and a hazard diamond.

Why Source Your Fertilizer Bags from Vietnam?

The Vietnamese packaging industry has invested heavily in technology to become a global leader in woven poly bag production. Here is why international customers are choosing Vietnam:

1. High-Quality BOPP Lamination For premium brands, Vietnam offers BOPP (Biaxially Oriented Polypropylene) laminated bags. This allows for photographic-quality printing. The characters and numbers are printed on a film that is then bonded to the woven fabric, making the text scratch-resistant and waterproof.

2. Durability and UV Protection Agriculture involves outdoor storage. Vietnamese PP bags are treated with high-grade UV stabilizers to ensure the fabric doesn’t degrade and the printed information doesn’t fade under intense sunlight.

3. Cost-Effective Customization Whether you need localized characters (English, Spanish, French, or Arabic) or specific regulatory numbering, factories like NAPCO offer flexible MOQs (Minimum Order Quantities) and competitive pricing that rivals or beats other regional hubs.

4. Strategic Logistics With proximity to major ports like Hai Phong and Da Nang, sourcing polypropylene sacks from Vietnam ensures shorter lead times for the Asia-Pacific, European, and American markets.

NAPCO: Your Partner for Precision-Printed Fertilizer Bags

At NAPCO, we understand that a fertilizer bag is a silent salesman. Our state-of-the-art printing lines ensure that every character and number—from the N-P-K ratio to your company’s barcode—is sharp, clear, and durable.

• Advanced Printing: We offer up to 9-color Flexo printing and high-end BOPP lamination.

• Material Strength: Our bags are engineered to withstand the weight of 25kg to 50kg without stretching or tearing.

• Global Compliance: We assist clients in ensuring their bag designs meet the labeling requirements of their target country.

Are you ready to elevate your brand with the best agricultural packaging from Vietnam?

Visit vietnamjumbobag.com to see our full range of PP woven bags, BOPP sacks, and Jumbo bags. Request a quote today and experience the quality that makes NAPCO a leader in the industry.

Visit vietnamjumbobag.com to browse our full catalog of laminated solutions or request a direct factory quote for your next order.

• Dien – Export Manager: +84 98 549 5345 (Whatsapp, Wechat, Line, Viber, Kakao talk)
• Email: Dien@napco.com.vn
• Website: https://vietnamjumbobag.com/