Cryofocus Medtech (Shanghai) Co. Ltd. received U.S. FDA breakthrough device designation on July 24 for its cryoablation system for asthma. The Chinese med-tech’s stock (HKEX:6922) rose near 20% over two consecutive days on the Hong Kong Stock Exchange with the news, increasing from HK$5.00 ($.64) July 23 to HK$5.98 nearing the close of trading on July 25.