home appliances in Beijing

Dear Beijing expat community,
we would like to buy bathroom appliances (e.g. water taps, sinks, door handles) for our new apartment. I know that these markets exist (I would know exactly where to go in Nanjing) but unfortunately I am not familiar with Beijing. Since I cannot fly down to Nanjing at the moment I would be very grateful if you could let me know where to find these markets in Beijing.

I am happy to answer questions for Nanjing in this forum!

Thanks a lot for your support in advance!

Best regards,
Billie