❓ What gases are compatible with C25 cylinders?

Our C25 cylinders are certified for hydrogen, helium, nitrogen, argon, CO₂, natural gas, and specialty gases. Always verify with our team for corrosive or reactive gases (e.g., chlorine, ammonia).

❓ How do your prices compare to U.S./EU manufacturers?

We offer 15–25% lower pricing due to China’s scale advantages in aluminum sourcing and manufacturing. Example: A C25-150L cylinder costs $450–$600 (FOB China) vs. $700–$900 from U.S. suppliers.

❓ What’s the lead time for bulk orders?

• Standard Models (1,000+ units): 15–20 days
• Custom Specs (OEM/ODM): 25–30 days
• Express Orders: 10–12 days (premium fee applies)

❓ Do you provide DOT/CE re-certification support?

Yes! We offer full recertification services (hydrostatic testing, visual inspection) every 5–10 years (per regulation). Our team handles documentation for DOT, CE, and TPED renewals.

❓ What’s your MOQ for first-time buyers?

500 units for standard models. For custom designs (e.g., unique valve types or branding), MOQ starts at 1,000 units. Sample orders (1–2 cylinders) are available for testing.

❓ How do you ensure leak-proof performance?

All cylinders undergo:

• 100% ultrasonic testing for material defects.
• Hydrostatic pressure testing at 1.5x working pressure.
• Helium leak detection (sensitivity: 1x10⁻⁹ mbar·L/s).

❓ What payment terms do you accept?

• TT (Telegraphic Transfer): 30% deposit, 70% before shipment.
• LC (Letter of Credit): At sight or 30/60/90 days.
• OA (Open Account): For long-term partners (credit terms negotiable).

❓ Do you offer after-sales support?

Yes! Our global service network includes:

• 24/7 technical support via WhatsApp/email.
• On-site training for cylinder handling and maintenance.
• Warranty: 2 years for manufacturing defects.