Seems simple enough. Someone found their website. Contact them. Ask them their standards. You are concerned with the kale, ask them how they check it for bugs. Ask them how they enforce their standards.
I will say this. I am an “orthodox, ben yeshiva with many years experience in kashrus”, dont trust my hechsher because I flaunt those qualifications. They are meaningless. Even if I am an expert in the relevent halachos, if I have a poor system to manage those standards, my knowledge is useless.