The process is established based on the results of the State-level pilot production project "Improving the production technology and application of the biological product Bio-VAAS.1 to prevent gummosis caused by Phytophthora spp. on orange and durian trees", implemented period from 2022-2023 and the State-level research topic: "Research on production technology and application of synthetic biological products to control yellow leaf, root rot and gummosis on some fruit trees" from 2018-2020. The process was tested and adjusted to fit with local conditions in Cao Phong, Hoa Binh, with the support of AFACI.