Acetowhitening test: 5% acetic acid solution Waicha or wet dressing, 3 ~ 5 minutes later, the local white lesions were positive and clear boundary.

According to the strength change of the FKJ mortar sample immersed in the alkali, acid and slat solution, test its ability of chemical resistance.

Different volume fractions of propolis extracted with alcohol and citric acid were used to make solution for queen larvae preservation test.