BRIEF-Canadian PM says he is very concerned by position China has taken on two detained Canadians

Huawei Technologies Co Ltd:

* CANADIAN PRIME MINISTER JUSTIN TRUDEAU SAYS HE IS VERY CONCERNED BY THE POSITION CHINA HAS TAKEN ON TWO DETAINED CANADIANS

* CANADIAN PM SAYS IT IS UNFORTUNATE THAT CHINA CONTINUES TO MOVE FORWARD WITH THESE ARBITRARY DETENTIONS Further company coverage: (Reporting by David Ljunggren)