How to import <template> with <Link import> becoming obsolete?

Hi, I am not using any stack, just good old html and js files.
I have developped several web components containing each a javascript part (the class of the component and the register part), with a html part (the tag).
With new import method () I cannot import anymore the html part containing the part. My question is how can I import the html part (the tag) into my main html file?
Thanks a lot and sorry if I was not clear :wink: