Dear SirsWe are the Export Company for Contact Lenses from ChinaOur Factory is in China but the technical Engineers and inspectors are Korean. We can guarantee the best quality for productThe product's life time is 1 year.Minimum Order's Q'ty is 50 sets per each item The factory has designed over 140 kind's color printing We can supply buyer's own design product by OEMWe can offer the best price conditionLooking forward your kind interesting to our productb. rgds,Charley HS Choi