Where can I find a place to exchange medical oxygen in Haidian District, Beijing? Who knows? Help me!

Beijing Fengtai Baipenyao Oxygen Factory Tel: 83622743

Fengtai District, Sihhezhuang Village South

Beijing Oxygen Factory Tel: 85385542

Chaoyang District, Heizhuangtou Township, Sihhezhuang Village

Beijing Haidian District, Sijiziqing Xingye Oxygen Factory Tel: 88462962

Tongjiaguan Village, Haidian District

Hello, there is a certain health care effect.

Beijing Anping Oxygen Factory Tel: 69900873

Pinggu District, Donggao Village Town

Beijing Shougang Oxygen Factory Tel: 68872451

Shijingshan District, Shijingshan Road

Beijing Changping Youlian Oxygen Factory Tel: 69771225

Chinese-Japanese Friendship Hospital also has, the consulting telephone: 010-84205288 But the oxygen there can not be filled, to use must rent his irrigation A irrigation rent is 400, every day deducted 2 yuan more money for the use of the fee.