At NAWAS, quality is the foundation of every product. Our strict quality control system ensures that all stainless steel drinkware meets international safety standards and performs reliably in insulation, durability, and appearance.
Raw Material Inspection
All products use food-grade 304 stainless steel and BPA-free lids. Each batch is tested for thickness, structural integrity, and surface quality to ensure safe, durable, and long-lasting drinkware.
In-Process Inspection
During production, inspections are carried out at every stage: CNC forming, welding, vacuum sealing, and surface finishing. Advanced equipment, including helium leak detectors, vacuum extractors, airtightness testers, and ultrasonic cleaning machines, ensures consistent insulation performance and leak-proof reliability.
Final Product Testing
Before packaging, every item undergoes:
• Heat retention and cold preservation testing
• Leak-proof and pressure testing
• Appearance and coating inspection
This guarantees consistent performance, aesthetic quality, and safe handling for consumers.
Packaging Verification
Packaging is carefully checked to ensure protection during shipping and consistent presentation for retail or promotional purposes. Customized branding and labeling are also verified for accuracy and durability.
Advanced Equipment & Automation
Our automated production lines, CNC machines, laser welding systems, polishing lines, and electroplating equipment enable precise forming, stable vacuum sealing, and consistent surface finishes, ensuring batch-to-batch uniformity for all orders.