We are a professional lens manufacturer with more than 20-year experience in the field of lenses, and over 15 years exporting experience. Our factory located in Danyang City, Jiangsu Province, China. Welcome to visit our factory!

Usually, our order quantity is 500 pairs for each item. If your quantity is less than 500 pairs, please contact us, we will offer the price accordingly.

Yes, we can send you free samples for quality testing. But according to our company rule, our customers need to assume the shipping cost. It takes about 1~3 days to prepare the samples before we send them to you.

Generally, it takes about 25~30 days, and the accurate time depends on your order quantity.

Yes, we can make the envelope with your own design. If you have more request on the envelopes, please contact us.