... capacitors, Beads, Optical couplers, Relay, Fuse,Diodes, Discharge, Quartz crystal Devices, Speaker, Buzzer, Optoelectronics/Fiber, Laser, Transistor,Trimmer potentiometers, ... take the responsibility if parts are detained by seller Custom, while buyer take the resonsibility if parts are detained ... by buyer Custom.3. If the Buyer discovers a quality problem, ...