Workers unload tuna at Yantian port in eastern Shenzhen yesterday. Dapeng Customs cleared a total of 415 tons of distant-water tuna harvested by Shenzhen Shuiwan Ocean Shipping Co. Ltd. in 30 minutes after clearance procedures were simplified to improve the business environment. The express service and the use of Yantian port helped save the company 5,000 yuan (US$714) in transport cost for each container.