Paving work, civil engineering work, exterior work, road environment maintenance work, asphalt mixture manufacturing and sales in Oyama City, Tochigi Prefecture Personal Information Protection Policy｜Site Map このページのコンテンツには、Adobe Flash Player の最新バージョンが必要です。 The "road" is indispensable for us to lead a comfortable life. In recent years, the environment surrounding the construction industry has changed drastically, but without being bound by conventional ideas, we are constantly introducing the latest knowledge and technology, continuing to study to acquire excellent technology, and a diversifying society. We will continue to make efforts so that we can respond to the target. Koyo Construction will continue to create human-friendly and environmentally friendly roads. Notice List 2014/04/08 The site has been updated. 2013/03/15 The site has been updated. 2011/12/01 The site has been updated. 2010/12/01 The site has been updated. 2009/10/16 The site has been renewed. We look forward to your continued support of Koyo Construction Co., Ltd. Paving work Civil engineering work Road environment maintenance To the top of the page Koyo Construction Co., Ltd. 689 Kizawa, Oyama City, Tochigi Prefecture 323-0014 TEL 0285-23-1165 FAX 0285-23-1441 Home｜Company Profile｜Business Profile｜Construction Results｜Inquiries｜Personal Information Protection Policy｜Site Map Copyright (c) 2021 KOYOKENSETU CO., LTD. All Rights Reserved.