Is Hangzhou Zhongmei Huadong Pharmaceutical Co., Ltd. a state-owned enterprise?

Not a state-owned enterprise. Sino-American East China generally refers to Hangzhou Sino-American East China Pharmaceutical Co., Ltd., not a state-owned enterprise or a foreign enterprise, but a joint venture. Formerly known as Zhejiang Pharmaceutical Factory, it was founded in 1952. It is a large pharmaceutical enterprise group integrating science, industry and trade with a listed company, five Sino-foreign joint ventures and several holding pharmaceutical enterprises.