When we "outsource", quotes are reviewed from several sources.
We (my company) produces finished SiN ceramic material.
We will not currently require their services. However; they stated that they have "internal capabilities" to produce their own various ceramic materials ie: aluminum oxide, silicon nitride, and silicon with TiC, etc... and I have no reason to doubt this.
They appear to be very capable and knowledgable in ceramic technology.
The information that I received from Cetek Technologies Inc CTKH:OTC Markets Group Inc stated they can machine, fabricate, and finish many different ceramic materials; in almost any shape and size. The technical information of their capabilities seemed adequate to achieve this.
In my opinion the OTC / stock market is of no concern as they are an independent manufacturing firm.
In time we will know more. How much time is the question; at some point they will have to acknowledge their shareholders in some way.