（1）滾塑一次成型，可制作二通、三通、四通90°~165°隨意率性交彙的壹切規格檢討井。
（2）充足表現滾塑成品的優勝性：耐沖擊，耐擠壓，耐磨，抗應力開裂性好，耐化學腐化性好，耐老化，應用壽命長。
（3）水流阻力小，進步排放效力。
（4）搬運很便利，進步施工效力。
（5）全體一次成型，極無滲漏，沒有二次凈化。
（6）塑料檢討井配井內蓋和平安網，當井蓋決裂或被盜後能有用避免人、車平安。
（7）可收受接管輪回應用。

(1) rotomolding a forming, can make two-way, tee, four-way 90 ° ~ 165 ° any intersection check well all the specifications.
(2) plastic products fully embody the superiority: impact resistance, compression resistance, abrasion resistance, good stress cracking resistance, good resistance to chemical corrosion resistance, ageing resistance, long service life.
(3) small flow resistance, improve the efficiency of emissions.
(4) transport is very convenient, improve construction efficiency.
(5) a whole shape, no leakage, no secondary pollution.
(6) plastic check well with well cover and a safety net, when the cap or have it stolen can effectively prevent broken people, car security.
(7) can be recycling use.

周轉箱規格參數表（堆諜式）

長處：綠色、環保、節能型檢討井

例：L-Z--400S-400