Shanghai Gain Int'l

We are a leading manufacturer and distributor of various cr-39 plastic lenses in China. We have large quantities of plastic lens,i.e.monofocal,bifocal and multifocal finishes and semi-finishes in stock for sale. For the need of production we need the resin monomer, proferably the product called "7AT". Those who has interest please feel free to contact with us. [详细介绍]