Hello Tom. Thank you for your feedback. As all the states start to open up, I also believe like you that all employees outside of the home become "essential workers" for the sake of the economy and normal human living.
As for Dasheng, my supplier told me that they stopped making the DTC3X KN95 in May. I'm sure that they got sick of being the poster child for counterfeit NIOSH.
As for getting other KN95, there are many options out there for the public. The misconception with the FDA Appendix A and what KN95s we can reasonably trust is a whole other issue. We are working on building a database of reliable KN95 that are NOT on the FDA list. We are also working on a "Groupon for PPE" website as well. We intend to offer "all essential worker" access to quality respirators in the near future.
As for the fear and anxiety that you and many others feel, I think that you should know that you are not alone. You are not over-reacting. You are right in the way you feel. The most reasonable things to do would be to talk to others, start mediating and recognize your feelings. Turn off social media and the news for a while. I find that when I engage in these mediums, I tend to go down the rabbit hole of anger and disgust. Just watch a ton of comedy on Netflix instead. If you are spiritual, then talk to your pastor, rabbi, guru, etc... It will be a long time until things get back to the way they were, so recognizing that now and making a plan for your life, physically and mentally is the best step forward. Wishing you all the best.