The wire depends on how many televisions, refrigerators, etc. you go.
The hot water pipe and cold water pipe is best to separate, because this can save a lot of money, after all, the difference between hot and cold water pipe a meter several dollars.
Lian plastic drainage is a well-known real
Water supply water above the proposed use of Rifeng aluminum-plastic piping, the best with a water distributor, you can pipe with fifty years.
Tie Cheng wire is not recommended, is a miscellaneous brand, not commonly used.