Shanghai Precede One Way Vision Material Co.,Ltd. located in the international metropolis-Shanghai.
Shanghai Precede has been committed to study one way vision, and successfully developed the unique technology which is different from the traditional ones. As the only domestic enterprise which won the invention patent for OWV, (Patent NO. is ZL200510020198.0) Precede has made it into practice and successed in mass production, with great effort to develop the global market and promote PRECEDE.
Shanghai Precede is the professi...