国产av第一次处破,国产精品99久久久久久人,国产精品9999久久久久,国产精品人妻99一区二区

The TBD-L7 portable folded ladder has obtained the Test Report issued by National Publich security ministry.
Brief introdution
This ladder is made from aluminum alloy. The connection pins are made from stainless steel.
The ladder is very simple, safe adn reliable.
Compared with the traditional ladder, its main advantage is light in weight and small in size.
This ladder  is used to deal with emerency activities, such as hostage rescue, siege criminal and fire rescue and so on.
Size optional from 3.0m, 3.6m and 4.2m