Electronic grade phosphoric acid is a key wet electronic chemical in semiconductor display manufacturing. It is mainly used for TFT array gate etching in aluminum electrode patterning, molybdenum etch-stop layer treatment and copper wiring surface treatment in molybdenum/copper composite electrode processing, and sodium-calcium glass surface activation in glass substrate processing. This product features ultra-high purity, low particulate matter, and high precision in concentration control, and can meet various customer packaging requirements.