: glasses clean glasses thoroughly?  
2 : glasses Are the glasses that come out clean?  
3 : How long does it take to clean a pair of glasses?  
">3 minutes  
: glasses What certifications does the product have and is there any quality issue?  
">CE&nb < / font > < font face = "tahoma" >, Germany < / font > < font face = "Yue 嬩 ð « Ÿ „" > GS&nb < / font > < font face = "tahoma" > and the < / font > < font face = "Yue 嬩 ð « Ÿ „" > ETL < / font > < font face = "song typeface Our company's products are of reliable quality and our service is considerate. Consumers can purchase them with complete confidence.