優點：

（1）滾塑可做直接頭外，還可做“T”字，“Y”字，
“L”字，“十”字等各種異型接頭。

（2）滾塑接頭，韌性強，可繞性好，便于施工。

（3）抗開裂性好，耐腐蝕，耐老化，使用壽命長。

(1) Rotomolding can do head directly, but also can do the “T” word, the word “Y”, “L” word, “ten” word etc. Various kinds of adapter.
(2)Plastic joint, strong toughness, good around, convenient for construction.
(3)Good cracking
resistance, corrosion resistance, ageing resistance, long service life.