[Amazon #1] 'The Most Understandable Roof Textbook' to Ease Anxiety Over Roof Remodeling, Released April 17

With the management philosophy of 'protecting roofs, which are the most important part of human livelihood,' we are a sheet metal construction company that has been providing construction services for over 20 years as professionals in roofs and exterior walls. We handle our direct sales business 'Teigaku' as well as subcontracting work from major housing manufacturers. We also actively expand our DX business combining 'Construction' x 'IT', continuing to challenge new fields such as the creation and operation of the 'Teigaku' website and a roof area calculation app.