QTA process has been developed by Mitsubishi Chemical Corporation. Truly, this process is the outcome that they worked very hard to this process to be realized based on fundamental philosophy. The basic concept is that QTA shall be cost saving but same or better quality than PTA for customer to utilize it to raise their enterprise value. We earnestly return our profit to our customers that we save from producing lower construction and production cost of QTA unifying 2 precess (Oxidation & Deoxidation) to one (Oxidation of high definiton) by accumulated technical and process know-how.