WARSAW -- China and Poland issued a joint communique here on Monday and agreed to upgrade their ties to a comprehensive strategic partnership, in a display of their shared commitment to further deepen bilateral cooperation.

China and Poland regard each other as a long-standing and stable strategic partner, and see the other's development as an important opportunity for mutually beneficial and win-win results, according to the document signed during Chinese President Xi Jinping's state visit to the country.

China and Poland pledged to promote bilateral ties in an all-dimensional manner to benefit the two peoples by enhancing cooperation in politics, economy, society and culture, and expanding coordination and cooperation on global and regional affairs in a spirit of mutual respect, equal treatment and win-win cooperation, the document said.

To further deepen their comprehensive strategic partnership, China and Poland agreed to strengthen high-level exchanges, and expand bilateral communication and cooperation at all levels between the two countries' central and local governments, legislatures and parties.

The two sides reaffirmed their commitment on mutual respect for sovereignty and territorial integrity as well as mutual understanding on each other's interests and major concerns.

Poland said it supports peaceful development of relations across the Taiwan Strait and renewed its adherence to the one-China policy in the document.

The two sides are ready to push forward bilateral cooperation within the framework of Poland's sustainable development strategy and China-proposed Belt and Road Initiative, which refers to the Silk Road Economic Belt and the 21st-Century Maritime Silk Road, said the communique.

China and Poland will strengthen the synergy of their development strategies, and conduct and deepen mutual beneficial cooperation to realize peace, sustainable development and common prosperity.

The two countries stand ready to further deepen their all-dimensional economic relations in the light of the principles of equality and mutual benefit. They pledged fair treatment of each other's companies.

China and Poland will make use of existing bilateral mechanisms to deepen cooperation in such areas as economy and trade, finance, transportation and logistics, infrastructure construction, civil aviation, energy, agriculture, e-commerce, science and technology, and environmental protection.

The two sides vowed joint efforts to promote balance of two-way investment and bilateral trade by further facilitating market access.

China and Poland will continue to encourage and support their enterprises to extend cooperation and actively explore new modes of cooperation in the fields such as infrastructure construction and production capacity cooperation.

China welcomes Poland's participation in Asia Infrastructure Investment Bank as a founding member.

China and Poland agreed to expand cooperation in such areas as culture, education and sports, deepen exchanges in areas including tourism, medical care and think-tank, and push forward communication between the two countries' young people.

The two sides are willing to improve visa application procedures to best serve bilateral personnel exchanges.

China and Poland believe that the mechanism of China-Central and Eastern Europe (CEE) cooperation has effectively boosted practical cooperation and people-to-people exchanges, and thus become a significant platform for China and CEE countries to deepen friendly and mutually beneficial cooperation.

The China-CEE cooperation, in alignment with major initiatives by the European Union (EU), prompts the development of China-EU comprehensive strategic partnership.

China and Poland stand ready to beef up communication and coordination in accordance with the principles of openness, inclusiveness, mutual benefit and win-win results, to jointly push for greater development of China-CEE cooperation.

China speaks highly of Poland's role in China-EU relations. Both sides support an early conclusion of negotiations on an ambitious and extensive China-EU investment agreement, which covers market assessment and investment protection.

The two sides stressed commitment to push forward democratization and institutionalization of international relations in accordance with principles and purposes of the Charter of the United Nations.

They called on world countries to jointly face challenges, seek development and share prosperity on the basis of equality and mutual trust, inclusiveness and mutual learning, and win-win cooperation.

The joint communique also includes items on other global and bilateral issues.

The Chinese president arrived in Poland on Sunday, the second stop of his three-nation Eurasia tour, which also includes Serbia and Uzbekistan.