Vinegar manufacturers upgrade producing technology in Yongchun, SE China's Fujian

A worker monitors a vinegar ferment system at a vinegar company in Yongchun, southeast China's Fujian Province, Oct. 24, 2018. The vinegar ferment in Yongchun has a history of more than 1,000 years. Local vinegar manufacturers upgraded producing technology in recent years. Their products are exported to over 40 countries and regions. (Xinhua/Song Weiwei)