417, changsha, hunan, China,410011
Dear Sir/Madam,we are manufacture and export all kinds of optical instrument,such as refractometer,microscope,photoelectric colorimeter,telescope,gem tools,ects.Please go to see our URL, xxxxxShould you require further information on products or ...
refractometer, gem tools, coin operated telescope, portable/ table spectroscope, portable/table polariscope, dichroscope, jadaite filter