谢谢那位专家帮帮忙给点资料（给排水）

- Survey of Real estate market in Shanghai =
> Main elements to be investrigated:
> * key developpers active there (global profile, financial background,
purchasing mode)
> * what do they use for Building pipes ( materials, volumes, pressure,
price, suppliers...)
> * what do they use as Water pipe underground in their coumpound (
volumes,materials, prices, suppliers)
> * what do they use as Munispal catsings (volumes, materials, prices
suppliers)