China expresses strong frustration and company opposition to the European Unions addition of Chinese companies and financial institutions in its 18th round of sanctions versus Russia, a Chinese Commerce Ministry spokesperson stated in a declaration on Wednesday.Despite Chinas duplicated representations and objections, the EU has persisted in its unilateral actions and approved 2 Chinese banks on unproven grounds, according to the statement.China has actually constantly opposed unilateral sanctions that lack international legal basis and are not licensed by the UN Security Council, it added.Noting the EUs actions have caused severe negative effect on China-EU financial and trade relations, the spokesperson said China urges the EU to immediately stop the wrongful practice of listing Chinese companies and financial institutions.China will take necessary procedures to resolutely secure the legitimate rights and interests of Chinese business and banks, according to the declaration.