Greetings most exalted ones...

I need to know who the manufacturer is of the bulkhead fittings I just got from Sharka here in the states. They are the standard ones A-C sells and they have blue color releases on them. It says on the fitting "CDC" which I assume is the initials of the manufacturer. I found a website called CDC Pneumatics in Korea that appears to be where these were manufactured. Is this the correct company? I need to contact whoever made these so I get the black color plastic release buttons as blue sticks out like a sore thumb in my case :-/