On August 27, 2019, Yunnan Xingyao Biological Products Co., Ltd. held a field observation meeting of "clearing the core" - 10 billion Bacillus subtilis products to prevent and cure vegetable root swelling disease in Tonghai County, Yuxi City. There were about 100 customers visiting the site. This observation meeting was greatly supported by Yunnan Agricultural University and the competent agricultural department of Tonghai County!