Japan called new Chinese restrictions on dual-use exports for its military “absolutely unacceptable,” while Beijing followed up with additional limits on dichlorosilane, a chemical used to make semiconductors.

Japan has criticized new Chinese restrictions on exporting so-called dual-use goods to the country, imposed after comments from its prime minister on Chinese military drills near Taiwan upset Beijing.

“A measure such as this, targeting only our country, differs significantly from international practice, is absolutely unacceptable and deeply regrettable,” Japan’s top government spokesman, Chief Cabinet Secretary Minoru Kihara saidd.

Dual use items are goods, software or technologies that can have both civilian and military applications, and can include certain key rare earths used to make items like drones and computer chips.