Tea refers to the leaves and buds of the tea tree. The ingredients of tea include catechins, cholesterol, caffeine, inositol, folic acid, and pantothenic acid, which are beneficial to health. Tea beverages made from tea leaves are one of the three major beverages in the world. Tea testing is an important method to evaluate the quality of tea. Tea testing can test the quality of tea from many aspects such as the production process, tea color, aroma, additives, and storage methods. STEMart provides comprehensive tea testing service to detect various indicators of tea, and determine the quality, safety and storage conditions of tea.