D523 is a great product that help the business diversifies a lot...

D523 is a great product that help the business diversifies a lot of risk in such a terrible economic environment. It doesn't generate significant cash by only selling a few, but it's still able to bring about meaningful revenue over a long-term, considering it can be widely used in many sectors. Importantly, it involves a lot of engineering and operational work (design, compliance, supply chain etc.) before they can sell a large TKF system to any new customer, so it takes time to finalize a deal like that.

In the background, we already know they are currently working with many customers closely, I guess we should see some good news about TKF soon.