MMC International Corporation, formerly Marine Moisture Control, traces its roots back to the Marine Plastic Corp., founded in 1939.\r\n\r\nSince th mid 1970's the company has concentrated its maufacturing efforts on its line of intrinsically safe portable hand held gauges and sampling tapes, vapor control valves, "Cam-Lock" Flange Couplings and "Cam-Lock" Tank Access Covers, all of which are recongnized as catergory leaders in the marine and industrial petroleum and petrochemical industries.