UnionPay is the primary network of these Chinese banks: från Wiki

Agricultural Bank of China
Bank of China (including its Hong Kong-based subsidiary Nanyang Commercial Bank)
Bank of Communications (Credit cards co-issued with HSBC)
Bank of Beijing
Bank of Ningbo
Bank of Shanghai
China CITIC Bank
China Construction Bank
China Everbright Bank
China Merchants Bank
China Minsheng Banking Corporation
Guangdong Development Bank
Huaxia Bank (Credit cards co-issued with Deutsche Bank)
Industrial and Commercial Bank of China (ICBC)
Industrial Bank (Credit cards co-issued with Hang Seng Bank)
Postal Savings Bank of China (formerly known as the China Postal Savings and Remittance Bureau)
Shanghai Pudong Development Bank
Shenzhen Development Bank
Shenzhen Ping An Bank
Taizhou City Commercial Bank
Other UnionPay-affiliated organizations include municipal commercial banks as well as rural credit cooperatives. Overall, there are 165 financial institutions that issue UnionPay cards.[citation needed]

UnionPay had partnered with JETCO in Hong Kong and Macau until 1 January 2006. As of January 2013, Bank of East Asia and Citibank were the only banks allowed to independently issue UnionPay credit cards in Hong Kong and the mainland. HSBC and its subsidiary Hang Seng Bank independently issue UnionPay credit cards in Hong Kong, while they issue cards in the mainland in cooperation with local banks as noted above. Deutsche Bank only has co-issued cards, with no independently issued UnionPay credit cards.

The following eleven foreign banks have the right to issue UnionPay debit cards in China:

Bank of China (Hong Kong)
Bank of East Asia
Citibank
DBS Bank (as of July 2009)
Hana Bank (as of November 2009)
Hang Seng Bank
HSBC
OCBC Bank (as of 2010)
OCBC Wing Hang Bank (as of 2010)
Standard Chartered Bank
Woori Bank (as of May 2009)
UnionPay in other countries:

AGD Bank offers a UnionPay debit card in Myanmar[18]
Askari Bank offers a UnionPay debit card in Pakistan[19]
Australia Post, previously distributed the "Load&Go China" card, issued by Bank of China (Australia) Limited; featuring imagery of the Great Wall[20]
Baiduri Bank offers a UnionPay debit card in Brunei[21]
Bangkok Bank offers a UnionPay credit card in Thailand[22]
Banque Pour Le Commerce Exterieur Lao (BCEL) offers a UnionPay debit card in Laos[23]
Bank Sinarmas offers a UnionPay debit card in Indonesia[24]
BDO Unibank offers a UnionPay credit card in the Philippines[25]
DBS Bank offers a UnionPay debit card in Singapore.[26]
Halyk Bank offers both UnionPay credit and debit cards in Kazakhstan[27]
Gazprombank offers both UnionPay credit & debit cards in Russia.[27]
Joint Stock Commercial Bank for Foreign Trade of Vietnam (Vietcombank) offers both UnionPay credit and debit cards in Vietnam[27]
Kasikornbank offers a UnionPay credit card in thailand[27]
Kazkommertsbank offers UnionPay credit cards in Kazakhstan[27]
Krung Thai Bank offers a UnionPay debit card in Thailand[27]
Lotte Card offers a UnionPay credit card in the Republic of Korea.[27]
Mitsubishi UFJ NICOS offers a UnionPay credit card in Japan.[27]
Muganbank offers a UnionPay credit card in Azerbaijan.[27]
SCT Networks offers a UnionPay Debit card in Nepal.[27]
Himalayan Bank offers a UnionPay Prepaid cards in Nepal.[27]
Nepal Investment Bank Limited offers a UnionPay cards in Nepal.[27]
NIC ASIA Bank offers a UnionPay virtual cards in Nepal.[27]
AmBank offers a UnionPay Credit card in Malaysia.[27]
Public Bank offers a UnionPay Debit card in Malaysia.[27]
Philippine National Bank (PNB) offers a UnionPay credit card in Philippines.[27]
Sacombank offers both UnionPay credit and debit cards in Vietnam[27]
Mitsui Sumitomo Bank offers a UnionPay credit card in Japan.[27]
Shinhan Bank offers a UnionPay credit card in the Republic of Korea.[27]
United Overseas Bank offers a UnionPay credit card in Singapore.[27]
Vostochny Express Bank offers both UnionPay credit & debit cards in Russia.[27]
National Bank of Pakistan offers UnionPay debit cards in Pakistan.[27]
1LINK offers UnionPay debit cards through its member banks in Pakistan.[28]