Research on the transformation and upgrading of urban characteristic industries 并列题名：Research on the transformation and upgrading of urban characteristic industries Research on the transformation and upgrading of China's marine industry research on transformation and upgrading of China's animation industry 并列题名：Research on the transformation and upgrading of China's marine industry Research on the path of transformation and upgrading of internet plus and architecture industries Study on the transformation and upgrading of travel agency industry Research on transformation and upgrading of Wenzhou merchants Research on transformation and upgrading of processing trade 并列题名：Research on the path of transformation and upgrading of internet plus and architecture industries