UOI is a joint venture company established between Union Paper Cartons Co., Ltd. - one of Thailand’s leading manufacturer of corrugated paper packaging company and Oji Interpack Co., Ltd. - one of Japan's leading manufacturer of  heavy-duty corrugated paper packaging company. Oji Interpack Co., Ltd., an original inventor of HiPLE-ACE trademark products, is a 100% subsidiary company of Oji Holdings with networks of business operations in Asia, Americas, Europe and Oceania. Living up to Union Paper Cartons Co., Ltd. and Oji Interpack Co., Ltd. 's good reputation as one of the leading corrugated paper packaging companies in Thailand and also in the world, UOI has always been in expansionary mode. We recently expanded our operations and are now having two manufacturing / service locations in Samutsakorn and Chonburi provinces of Thailand with further aims to expand our business operations in ASEAN countries.