n 1930 We, CARTON OPTICAL INDUSTRIES, LTD., were founded as a wholesaler of spectacle frames in Tokyo, Japan, and then, in 1951 we began importing and exporting various kinds of optical goods as a trading company. In 1964 our own factory was established at the estate of about 14,000 square meters in Saitama so as to manufacture optical goods such as microscopes, binoculars, telescopes, magnifiers and ophthalmic instruments under a registered Carton brand. In 1988 our 100% capitalized factory, Carton Optical (Siam) Co., Ltd. was established in Pathumthani, Thailand to manufacture microscopes, etc., having some 160 employees. Our factory, Carton Optical (Siam) Co., Ltd. was approved to be accordance with ISO 9002 in December 1999, ISO 9001 in March 2001 and ISO 14001 in October 2004 to secure strict control of quality.