1. harvest that peach gum harvested in the growth season of peach tree. cut the gum on the trunk of the above tree species with a knife, and put it in the sun to dry, which is the raw material of peach gum. When harvesting peach gum, the bark shall not be hurt.

2. Impurity removal: Soak the harvested dried peach gum raw materials in water (solid-liquid ratio1:2), and when the raw materials swell, tear them into small pieces, remove the impurities such as bark, sawdust and sediment, and then drain the water before moving to the next process.

3. Hydrolysis: Add the impurity-removed raw materials and water into a jacketed reaction pot, stir, heat with steam or oil bath, control the temperature at about 120℃, complete the reaction after 3-6 hours, filter with a 40-mesh copper wire mesh screen, and then put into a vat, which is the product to be bleached.

4. Bleaching: The products to be bleached are strongly stirred, and10% sodium chlorate bleaching solution is gradually added, and 0.1%-0.2% formaldehyde or 0.005% carbendazim is added for anticorrosion, that is, the semi-finished products are basically colorfast.

5. Dry it in a stainless steel plate and blow it with steam, or directly heat it in a pot with fire, turning it constantly during the heating process, and get a paste product with water content of 50% after drying.