Due to PQC department have checked and found that the lamp of the insect killer machine has turned off which the insect killer machine need to open all the time but the power cord of the insect killer machine is the same wire as the power cord of the illumination inside Warehouse 4. If the illumination inside Warehouse 4 has turned off, it will cause the lamp of insect killer to turn off also therefore it is necessary to move on-off switch separate from the illumination inside Warehouse 4. Please send technician to fix this problem.