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.

While Tokyo and Beijing have touted the importance of thawing ties, experts say a number of issues are likely to mean continued hedging by both sides.

Japanese Foreign Minister Takeshi Iwaya has met with top Chinese leaders during his visit to Beijing, the first since the heads of the two countries met at a summit in Peru last month

Takeshi Iwaya made his first trip to Beijing since becoming Japan's foreign minister in October. Chinese officials said often difficult bilateral ties were "at a critical period of improvement and development.