If employment: choose the Institute of Optical Machinery, provided that the research laboratory, career establishment, rather than enterprises! Never note that the Institute of Optical Machinery enterprises are not as good as Shenyang Machine Tools. Because I am the Institute of enterprise, although I do not know the treatment of Shenyang Machine Tool, but know the Institute of enterprise, will let you down.
If you shop for products: depends on what you need products, many products of the optical machinery Institute is still a leading position in the country.