What is the package? 1pc in polybag;12pcs in a white box;300pcs in a carton How about logo printing service and custom service? Logo printing service on lens or frames is available .You can choose laser,silk printing.we also can be customized according to your requirements. Do you attend any profesional eyewear fairs? Of course, we attend exhibitions in Japan, America and other countries every year What's the sample time? We have two cases: one month for mold opening; A week without a mold What if we find shortage after we receive and check the order? Actually we take three inventories to guarantee the complete quantity.The first inventory is taken by factory clerk ,the second is by warehouse clerk and the last by office clerk.Basically shortage couldn't happen.Please trust us that we are honest and careful supplier and so sincere to establish a long-term business with you. The reading glasses are simple in appearance and can be worn by both men and women. The 360-degree pen can be folded, which makes it easy to go out and ultra-light to carry and prevents loss in daily life. This kind of reading glasses adopts ergonomic comfortable nose support to prevent falling off and not pressing nose; The hinge is firm, adapt to all kinds of face, firm not to drop; Mirror legs used prevent slippery design, flat shape, large contact area, increase the friction force, prevent slippery prevent sweat, rotary receive portable stereo design, unique design, clever to reduce volume, do not take a place, still can carry around, and the lens and blu-ray function, a mirror block harmful blue light, to reduce the harmful light damage to the eyes, eye protection. Can also customize the lens dispensing.