GT Copper Txuas Tube (Kev hla dhau)
General Cov khoom no muaj feem xyuam rau kev sib txuas ntawm cov xov hlau thiab hemicycle-sertor hlau hauv cov khoom siv faib khoom lossis cov khoom siv hluav taws xob.GT series txuas raj yog ua los ntawm tooj liab raj.GT TSI...