欧美精品久久久久,天堂a在线,亚洲免费二区,99久久久成人国产精品,亚洲永久字幕,91chinese一区二区三区,久久久久久久这里只有精品

Tolian successfully developed a new kind of mould system cooperated with China Tiesiju Civil Enginneering Group Co., Ltd.  This set of utility tunnel  mould system has the advantages of high precision, high reliability, and  operability.

The mould is composed of bottom mould, side mould, end mould,  internal mould and setting system. During the manufacturing, two sets of moulds will share one internal mould to save time and working place.