Page three goes in to more detail, but every letter addresses their dependence on and relationship with a certified lab. I more than acknowledge this risk, reflecting on whether this has kept management up at night for two decades. It won't stop me from recommending or bidding to get back shares.
An investing strategy of low cap stocks led me to this symbol. Did you discover PCHM by doing a search of companies that have between 584,000 shares and ten times that amount?