Exploring: The production of a piece of Fu Brick? Tea | TEA friends who love to drink Fu tea can always see the lush golden flowers on the flat surface of Fuzhuan tea, the color is shiny and shiny. What are these substances? To understand these, we must first know the raw materials and process steps of Fucha. 1. The raw materials of Fu tea The black hair tea raw materials used in Xiangyi Fu tea have been aging for at least two years in the reserve.