Industrial Relay Silicon Controlled Rectifier manufacturer / supplier in China, offering PCB Screwless Terminal Blocks, with 2.5mm, 3.5mm, 5.0mm, 7.5mm Pitch, PCB Switch, with DIP, Piano and SMT, 1.27mm Pitch, 2.54mm Pitch, PCB Switch, DIP, SMT, 2.54mm, 1.27mm, Tube Package, Reel-Tray Package, Black, Red, Blue Colors and so on.