China’s Yunnan Yunwei Group Co plans to start commercial operations at its new 25,000 tonne/year 1,4-butanediol (BDO) plant at Qujing, in Yunnan province, in December. "We started test run [at the facility] in end September and everything is smooth so far," said the source. In addition, the company has delayed the start-up of its 200,000 tonne/year acetic acid plant at the same site from the original schedule of late September, the source said. Construction at the acetic acid facility was almost complete, the source said, adding that no specific schedule for the start-up was available.（ICIS) 云南云维位于曲靖年产2万5的1，4丁二醇装置将启动商业运转。9月底该机器测试运转良好。 另：该公司延迟启动曲靖年产20万的醋酸装置，原计划是打算9月底启动的。相关人士表示醋酸装置的建设已基本完成，但尚未确定启动时间。