Chairman’s Message
It is my great honor to introduce our flagship company, Yongsan Chemicals, Inc.,
and its subsidiaries to our customers.

Ever since our foundation in 1973, we have been Korea’s No.1
manufacturer of Maleic Anhydride and its derivatives, which include Fumaric Acid, Tetrahydrophtalic Anhydride and Dl-Malic Acid. Today, with an annual production capacity of about 40,000 metric tons of Maleic Anhydride, we serve our customers in almost all countries of the world.

As you are well aware, Maleic Anhydride and its derivatives have a very
wide range of industrial applications. For instance, our customers
around the world use our quality products to make unsaturated polyester resins, premium plastics with higher performances, and high-performance coating materials.

In 2002, we acquired Korea PTG Co., Ltd., a fully integrated Polytetramethylene ether glycol(PTMEG) producer with developed and
commercialized cost competitive technologies for the manufacture of 1,4 Butanediol(BDO), Tetrahydrofuran(THF), and PTMEG, which are the key raw materials for the manufacture of spandex fibers. Our proprietary technologies for the production of PTMEG are now available for license.

Meanwhile, our another subsidiary, Yongsan Mitsui Chemicals, Inc., which is a joint venture with Mitsui Chemical Group of Japan, produces acrylamide for water treatment products and paper chemicals. More recently, in our effort to meet the rapidly increasing customer demand for water treatment chemicals, Yongsan Chemicals launched a new project to develop and manufacture Dimethylaminoethyl Acrylate Methylchloride Quaternary salt(DAQ). Our commercial supply began by the late 2012.

For long, your support and trust in our products and services have been the cornerstone of our success. We look forward to more closely cooperating with you for many more years to come.