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Raw Material Inspection
Strict check on 304/316 food-grade stainless steel, silicone and coating materials. Ensure full food-safe compliance before production.
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In-Process Testing
Real-time inspection of welding, vacuum tightness and cup structure. Eliminate leakage and defective products during production.
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Insulation Performance Test
Standard 6/12/24H hot & cold retention testing to guarantee stable vacuum insulation performance.
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100% Leak-Proof Test
Full-angle inversion and shaking tests ensure tight sealing and zero leakage for daily and outdoor use.
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Appearance Quality Control
Precision inspection on surface finish, coating durability and logo printing, meeting EU & US retail standards.
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Pre-Shipment Final Audit
AQL standard sampling inspection, function recheck and packaging test. Complete inspection reports provided for batch orders.
