About Stainsless Steel Bottles

Q1: What materials are used in your vacuum bottles? Are they corrosion-resistant?

A:
Our stainless steel bottles are engineered with strategic material combinations to balance cost and performance:

✅Standard Solution (Most Cost-Effective):

• Inner Layer: 304 stainless steel (food-grade, rust-resistant)
• Outer Layer: 201 stainless steel (durable exterior)

✅Premium Upgrade:

• Inner Layer: 316 surgical-grade steel (5x more corrosion-resistant than 304)
• Outer Layer: 304 stainless steel
  Ideal for: Medical/Pharma industries, high-humidity regions

Why This Matters?

• The 304 inner layer undergoes 10,000+ electropolishing cycles (surface roughness ≤0.1μm), eliminating bacterial residue.
• 316 material passes 168-hour salt spray tests (5% NaCl, ASTM B117) with zero corrosion.

Q2: Why is there such a big price difference between vacuum bottles?
Pricing reflects precision manufacturing steps that directly impact quality:

Critical Process Controls:
1️，Vacuum Integrity:

• Single leak test → Vacuum rate≥95%
• Double leak tests → Vacuum rate ≥99%
  Cost Impact: +15% for double testing

2️，Electropolishing:

• Standard grade: Surface roughness Ra ≤0.4μm
• Medical grade: Ra ≤0.1μm (86% lower bacterial adhesion risk)

3️，Seamless Welding:

• Manual welding → 92% pass rate
• Laser welding → 99.8% pass rate (+20% cost)

Our Promise:
"We never compromise on core safety processes but optimize auxiliary steps to deliver the best quality at your target price point."

Q3: What's your MOQ?

The Minimum Order Quantity (MOQ) depends on your specific requirements:

• Customization (design/color/material changes): MOQ 3,000pcs
• Ready-made stock items:1 carton (20-100pcs per carton, as specified under each product).

Q4: What is your sample policy?
A. For New Clients

✓ Free samples up to USD 5 (2-5 items depending on product)

✓ only pay for shipping cost

✓ Fast-tracked: Shipped within 24hrs after payment

B. For Repeat Clients

✓ Earn 0.1% free sample credit from your accumulated order value

Example: USD 10,000 orders = USD 10 sample credit

✓ Flexible usage:

▷ Redeem samples ▷ Offset shipping fees ▷ Combine with new orders