You can assess the search report with the same link.
The search report is positive only one X document which is very good in terms of chances for granting the patent. However the search has been carried out by Chinese authorities. It is possible that when this application enters examination in US or Europe the corresponding authorities will redo a search and come up with more important documents. However Chinese authorities will do examination on this search report so it shouldn't look to bad in terms of China.
The whole thing is not very good or very bad. CBMC have already patents in this field and it is very difficult to say if this gives some very important technologically. Possibly they have no patent protection in China yet. That could be the reason to get a patent there now. I don't remember the patent situation in China, but possibly they have no patent in China yet.
It is remarkable that the applicant is the joint venture and the application was filed via the Chinese patent office. Mink is amongst the inventors. Could be a matter of reduced fees, but shouldn't make a huge difference because it is an international application, i don't know. Possibly you can speed up granting of the patent in China by filing it initially there. It might get important to get patent protection in China as soon as possible when they hit the market there.
The most important market barrier for competitors however should be approval rather than patent protection in the near future. But patent protection could be important to exclude competitors in the long run. So it is a good move. It is lateral flow technology.
The pps rises, some more people obviously want to hold some shares of CBMC during May. However volume is not ground-breaking already.