How many sewage treatment plants are there in Hangzhou Xiaoshan I***?

1.Hangzhou Xiaoshan Qiantang Sewage Treatment Co., Ltd Address:No.687, Shimin Road, Xiaoshan District Tel:82379861

2.Hangzhou Xiaoshan Yangcheng Sewage Treatment Co., Ltd Address:Development Zone, Nanyang Town, Xiaoshan District Tel:82171494

3.Hangzhou Xiaoshan Shantou Sewage Treatment Co., Ltd Address:Yuncheng Village, Guali Town, Xiaoshan District Tel: 82506073

4.Hangzhou Xiaoshan Hangmin Sewage Treatment Co., Ltd Address: Hangmin Village, Guali Town Tel: 82556596

5.Hangzhou Xiaoshan Sewage Treatment Co., Ltd Address: Tonghui Middle Road, Xiaoshan District

6.Hangzhou Jihua Chemical Co., Ltd Address of Sewage Treatment Station: Tangxin Line, Xiaoshan District Tel: 22898078?