Milliliter. Nongfu Spring milk tea was released on 202 1 and 10, with specifications of 300ml, 330ml and 380ml. Nongfu Spring, namely Nongfu Spring Co., Ltd., formerly known as "Zhejiang Qiandao Lake Yangshengtang Drinking Water Co., Ltd.", was established on September 26th, 1996. Headquartered in Hangzhou, Zhejiang Province, it is the holding company of Yangshengtang.