Dor Yang precision instrument (Shanghai) Co.,Ltd is a company which is focus on producing and studying for specialized laboratory analysis, scientific instruments, optical instruments and biological monitoring equipments and so on , we provide sales and service on businesses for all the world , the company was registered in the Pu Dong New Area, Shanghai, the company registered capital is RMB 66.7 million. Company holds “honest, dependable, motivated, win-win” business philosophy .We keep the faith “Trustworthy sets up the bridge of win-win cooperation for each other”, we provide the high quality service to serve customer demand at home and abroad. The company’s main products are mainly for the optical near-infrared spectrometer, spectrophotometer, polarimeter, Physics optics series …