A catalytic system for an oxidative carbonylation reaction is provided, which includes a metal organohalogen catalyst, at least one organic nitrogen-containing heterocyclic adjuvant, and an inorganic co-catalyst, wherein the inorganic co-catalyst is selected from carboxylates, nitrates, halides, oxides, and complexes of lead, lanthanum, titanium, tungsten, and dysprosium. The information is recorded on the recording medium in the form of length and interval of a mark portion. Further, the matching design between the adapter body and the ferrule holders facilitates quick and accurate installation of the mono-block type optical fiber adapter, saving much installation time and labor and enhancing structural stability and reliability.