Nơi xuất xứ
Beijing, China
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6m, 12m.etc
Tiêu chuẩn
GB/T,ISO,BS EN
Color
black outside with inner orange or blue color
producing lines
more than 70 and still adding
factory-visiting acceptance
yes and we provide accomodation
installation instruction
by tele or at site
ship-loading instruction
yes
working area
mainly for drainage use
exporting ability
independant
special diameters
making new molds for different diameters