南通住友电木有限公司的母公司日本住友电木株式会社为增加南通住友电木有限公司的产品线，于2013年6月再增加投资3100万元，建设了年产1800吨液态环氧树脂和年产6200吨食品、工业用塑膜工厂。两工厂于2014年5月完成建设试车，2014年9月9日，举行了盛大的竣工仪式，两产品开始进入商业化生产。

In order to enrich the production lines of Nantong Sumitomo Bakelite, Sumitomo Japan, the parent company of Nantong Sumitomo Bakelite, increased its investment of 31 million RMB by June of 2013 to build up factories that can produce 1800 tons of liquid epoxy resins and 6200 tons of food packaging and industrial films annually. The two factories finished commissioning by May of 2014 and on the 9th of September 2014 a grand completion ceremony was held, meaning the two lines went into commercial production since then.