OOLONG TEA also called Age tea"、"Blue tea" belongs to the semi-fermented tea. It is also known as "wonderful and healthy medicine", which can help digest and urinate. Oolong tea has strong anti-allergic, anti-cancer effect.

The manufacturing method of Oolong is a combination of the production advantages of green tea and black tea. The bottom of the leaf is green and the edge is red. It has a taste of the vibrant of green tea and the mellow of black tea. It was first produced in Wuyi mountain in late Ming and ealy Qing Dynasty.

The steps of procedure of Oolong tea are withering, making fixation, stirring fixation, rolling drying up. Among those steps, making fixation is the key process of forming specific quality characteristics of Oolong tea. It is also the basement to esteblish the fragrance and taste of Oolong.