THS OPTICAL one of the original lens supplier in China, provide a full stock lens collection of 1.49 1.56 1.60 1.67 1.74, cover the design of Single Vision, Bifocal and Progressive, all the lenses are made from the most approved material of CR-39, Mr-8, Mr-7, etc. The workshops are equipped with the advanced and stable machine for HC and ARC coating, the experienced workers guarantee every step of the process worked out perfectly, by obeying the scientific managenment according to ISO standard. The management rules not only on the process of production, but also strictly on the lens inspection, the inspection is required after every treatment made, so in the production the UC, HC and HMC, lens will all be inspected. With years of experience and high reputation, Boris Products have been proved to be very competitive and sell well in oversea markets.