When using solar cells and photovoltaic modules, pay attention to the following matters:

(1) Whether the outer surface of the solar cell is broken, cracked, cracked, bent, irregular or damaged;

(2) Whether the connecting wires, joints and plug-ins are in good condition, and whether the leads and live parts are exposed;

(3) Whether the sealing degree of the solar cell module is intact and whether the sealing material is invalid;

(4) Whether bubbles or delamination of continuous channels are formed between the frame of the solar cell module and the cell;

(5) Whether the junction box is installed and fixed firmly.