... -556 4.85-265VAC,50-60HZ different length T10 LED light for tube 1.input vottage/HZ: 85-265VAC,50-60HZ 2. length ... raw material test,the first time for brightness test,the second time for brightness test,the test to weed out the disqualification products ... ,factory has developing step by step,the scale from small to big,based on the good reputation,the good quality and ...