
Key Product Advantages:
- Strong weather resistance – PP woven fabric with lamination coating performs reliably in high-temperature, high-humidity, and low-temperature environments, meeting storage and transport demands across diverse regions.
- Moisture barrier – coating prevents cement from absorbing humidity during ocean shipping and open-yard storage.
- Micro-perforated for air release – prevents bag burst on high-speed screw packers; air escapes instantly during filling.
- Reliable drop performance – tested per GB/T 9774-2020, meeting strength requirements for cement packaging bags.
- Validated by top Chinese cement groups – supplied to Conch, CNBM and other leading cement producers under the same specification, with tens of millions of bags delivered annually and zero field complaints.
- Traceable data – mill test reports available, with test methods alignable to international standards such as ASTM and EN for customer verification.
| Product | PP Block Bottom Valve Bag |
| Material | 100% Polypropylene (PP)
|
| Color | White, Yellow, Blue etc., Customizable |
| Length | 45cm - 91cm, Customizable |
| Width | 35cm - 60cm, Customizable |
| Bottom Width | 8cm - 18cm, Customizable |
| Valve Type | Internal or External
|
| Valve Material | PP or Non-Woven Fabric, Customizable |
| Top Treatment | Hot air welded with filling valve |
| Bottom Treatment | Hot air welded with no stitching, no hole
|
| Printing Type | Flexographic Printing, 4+4 Colors (Front & Back) |
| Weave Density | 32 - 56 ends/10cm, 7×7 - 14×14 /inch, Customizable |
| Air Permeability | 20 - 160 CU |
| Fabric Weight (GSM) | 58 - 75g/m², Customizable |
| Fabric Treatment | Laminated / Anti-slip / Plain, Customizable |
| Lamination GSM | 14 - 30g/m², Customizable |
| Loading Capacity | 25kg / 50kg, or as requested |
| Characteristics | Auto-filling, self-sealing, moisture proof, easy for pallet pack, save warehouse space, cost-effective compared with kraft paper bag. |
| Application | Cement, Sand, Dry-Mix Mortar, Chemicals, Construction Materials, Animal Feed etc.
|
| Transport Package | 200 - 500 pcs/bale, or 5000 - 6000 pcs/wooden pallet, or as requested |
| Delivery Time | 10 - 30 days for one 40H container |
| Certificate | ISO 9001:2015
|
| MOQ | 50,000 pcs |
| Production Capacity | 150 million pcs per year |
| HS Code | 630533 |

- Large-Scale Production Capacity & Logistics Advantage
- 3 Subsidiaries · 90,000 m² · Assets: ¥260M (≈ $38.34M)
- 3 Lines · Nearly 400 Sets of advanced equipments · Over 300 Million Pcs/Year
- Top 20 Plastic Weaving Enterprises in China (12 Consecutive Years)
- A complete multimodal logistics system (Road, Rail, Water)*
- Standardization & Technical Authority
- 11 Patents + 2 Software Copyrights
- Main Drafter: GB/T 9774-2020* & Multiple Industry Standards
- Certifications & Export Convenience
- Certified: ISO 9001:2015 · ISO 14001:2015 · ISO 45001:2018
- Self-operated Import & Export License

