Based on the accumulated experience, the "circular waterway (SK side groove) NS type" has been improved as a side groove in consideration of creating a new urban landscape. Click here for details A new era of circular gutter series that we can confidently deliver as a drainage ditch that also has cost performance. Click here for details The accumulated know-how and technical materials are released. We will disclose the technology of circular waterways created by emerging materials. Click here for details 2009/07/31 We have renewed the homepage of Shinko Kozai! Copyright © 2009 shinko kozai Co., Ltd. All Rights Reserved. HOME site map privacy policy Request for materials / inquiries