By Liz Lee and Sakura Murakami BEIJING/TOKYO (Reuters) -Seafood trade is expected to be on the agenda on Wednesday as Japan's foreign minister visits China, Japan's largest export market for aquatic products until Beijing banned them in protest against Tokyo releasing treated radioactive wastewater into the ocean.

China and Japan agreed that Beijing’s top diplomat should visit in 2025, adding to the signs the two nations are repairing ties that have been strained in recent years.

China and Japan have agreed to set up talks on often contentious security issues. The two countries are seeking to improve a relationship riven in recent years by a range of issues, from territorial disputes to the discharge of water from Japan’s tsunami-wrecked nuclear power plant.