1, LED light bar packaging protection is imperfect, resulting in the transport process in light beads to damage upon impact.
　　2, LED light bar of the weld Weld phenomenon, caused by vibration during transport off the lead solder with no bright lights.
　　3, LED light bar less solder, solder joints easily.
　　4, LED light bar solder quality is not good, LED lights with flexible joints in the bending process prone to brittle fracture, shedding phenomenon.
　　5, LED light bar installation bending angle is too large, resulting in LED lights with flexible joints and copper separation and lead to light.
　　6, LED light bar installed over extruded products, resulting in LED lights with flexible chip solder joint deformation damage or loss is not bright.
　　7, LED light bar circuit board solder mask layer is too thick, welding, soldering and circuit board can not be completely together, but also a Weld phenomenon.
　　8, LED light bar can not be twisted during installation, if it will cause distortion of the flexible LED lights off with the lead off spot.