[Specification]

With high-rise buildings in the proximity, it is difficult to protect from diffracted sounds effectively by vertical soundproof walls in limited height. As one of representative options to minimize the problem, tunnel soundproof walls are used.

[Company Intorduction]

Since its inception in 1983, Do-a Industrial Co., Ltd. starting with metal structure and window works as a licensed specialized contractor, had steadily grown into a domestic leading contractor in the same line of business it is engaged in capable of construction performance of KW 25.5 Bil in 2017.