
Refillable 20L 30L 40L 50L 60L 70L Industrial Gas Cylinder N2/Nitrogen O2/Oxygen/CO2/H2/Hydrogen Cylinders with ISO9809-3. Wide Capacity Range: Available in 20L, 30L, 40L, 50L, 60L, and 70L sizes for various industrial needs. Comprehensive Certifications: Cylinders approved under ISO9809, DOT, and TPED standards. One-Stop Service: Complete product line with gas consulting, supply design, and installation services. Professional Quality Control: Strict testing implemented with a perfect after-sales service system. Flexible Logistics: Full container and consolidation container options for import and export. Sample Availability: 1-2 free samples available for testing upon customer request. Long-term Manufacturing: Manufacturer specializing in gas production for over 10 years.