What pharmaceutical factories are there in Wu Hanyou?

Too many. Let me give you some famous examples:

Wuhan Zhonglian Group Siyao Drug Co., Ltd.

Wuhan Zhonglian Pharmaceutical Group Co., Ltd.

Wuhan shencao traditional Chinese medicine co., ltd

Wuhan taifu pharmacy co., ltd

Wuhan tiantianming pharmacy co., ltd

Wuhan Tianyuan pharmacy co., ltd

Wuhan Tian Tian Drug Co., Ltd.

Wuhan Tongan drug co., ltd

Wuhan tongji meiji medicine co., ltd.

Wuhan Tongji modern medicine co., ltd

Wuhan Tanya Drug Co., Ltd.

Wuhan weiao pharmacy co., ltd

Wuhan Jason Wu Drug Co., Ltd.

Wuhan Wu da Justin drug co., ltd

Wuhan wuyao pharmacy co., ltd

Wuhan Xishibao Drug Co., Ltd.

Wuhan yizhihua industry co., ltd

Wuhan Ginkgo Chinese Medicine Factory

Wuhan Yuanda Pharmaceutical Group Company Limited

Wuhan Jianmin

Wuhan Hualong biology pharmacy co., ltd