A. Our products pass different standards, including ENISO 12312-1:2013(A1:2015), AS/NZS1067.1:2016, ANSIZ80.3:2018, and also with FDA.
B. Strict QC is done during production process.
C. We offer one year guarantee from shipping date for all glasses frames. For the lenses, any defective, they can be replaced within one month from shipping day.
During the production process, there are dedicated inspectors to conduct inspections.
Yes, all our valves are 100% tested before shipment. An EN 10204 3.1 certificate is provided free of charge as a standard document with every valve.