Huanan County. According to the query Chinese knowledge network shows that Huainan County is located at 45 degrees north latitude, altitude and climate in the country's most suitable for the growth of perilla, coupled with the unique fertile black soil in Heilongjiang, the production of perilla oil is the best quality. Soursop oil is a perilla seed oil, the main component is linolenic acid, is a high degree of unsaturated natural oils and fats.