CRY, 不到20不卖。 是有理由的。

（1）currently严重的undervalue。
（2）growth potential。 previously metal heart valves are used. the problem for metal heart valve is that the patient has to use anticoagulant every day to prevent life threatening side-effect (clog in heart and/or anywhere else). that is very inconvenient. children with many kinds of congential heart diseases and adults with heart valves problem have to have valves replaced to extend live. I will see gradual market gain of CRY's human nature valves.

if you want to hold one stock long term, CRY is a good candidates.

disclaimers: I hold CRY long at low 5s. This is not a promotion of CRY. This just serves an intruduction for serious investors. you need to do your homework, understand business nature, competitive intelligence of similar products, medical needs etc.