Is Bomin Electronics the only listed company of amb ceramic substrate?

No, according to official website of Suzhou Bopai Semiconductor Technology Co., Ltd., there are four listed companies of ceramic substrates: Yunzhong Technology, Sanhuan Group, Sihui Fuji and Bomin Electronics, so Bomin Electronics is not the only listed company of amb ceramic substrates. Bomin Electronics was founded in 1994 and listed on the Shanghai Stock Exchange on 20 15 and 12.