[en] A gas-jet transport system has been installed to the RIKEN GAs-filled Recoil Ion Separator, GARIS to start up SuperHeavy Element (SHE) chemistry. This system is a promising approach for exploring new frontiers in SHE chemistry: background radioactivities from unwanted by-products are suppressed, a high gas-jet transport yield is achieved, and new chemical reactions can be investigated. Useful radioisotopes of "2"6"1Rf"a","b, "2"6"2Db, and "2"6"5Sg"a","b for chemical studies were produced in the reactions of "2"4"8Cm("1"8O,5n)"2"6"1Rf"a","b, "2"4"8Cm("1"9F,5n)"2"6"2Db, and "2"4"8Cm("2"2Ne,5n)"2"6"5Sg"a","b, respectively. They were successfully extracted to a chemistry laboratory by the gas-jet method. Production and decay properties of "2"6"1Rf"a","b, "2"6"2Db, and "2"6"5Sg"a","b were investigated in detail with the rotating wheel apparatus for α- and spontaneous fission spectrometry. Present status and perspectives of the SHE chemistry at GARIS are also briefly presented.