The DAIKEN Group's CSR Basic Policy


Contribute to the realization of a sustainable society by creating values shared with society through activities for "Ecology" and "Improvements in the quality of space"


  1. With CSR and CSV* as the key axes, we will improve our corporate value and enhance our competitiveness to realize GP25.
  2. Using CSR as an activity to enhance our ability to respond to and earn the trust of society, we will systematically pursue CSR with our responses to the environment, society, and governance as key axes.
  3. Positioning CSV* as one of our management strategies, we encourage activities voluntarily and actively through the whole business process.

*DAIKEN's CSV is defined as finding solutions to social issues through the provision of common values capitalizing on DAIKEN's uniqueness.

CSV Theme

  1. Building a sustainable society
  2. Providing secure, safe, and comfortable spaces
  3. Comprehensive use of wood building materials— encouraging the use of cascading

CSR Activity Promotion System

CSR Activity Promotion System

Medium-Term CSR Activity Plan (for fiscal 2017-2019)

Medium-Term CSR Activity Plan

Daiken Group Environment Policy

The Daiken Group recognizes the important duty to engage in environmental issues as we carry out our business activities, and we are committed to the building of a sustainable society that is friendly to the Earth and its people. To deliver long-term sustainability, we will maintain our Environmental Management System with our progressive efforts.

Building a recycling-oriented society

Building a recycling-oriented society

We are committed to the effective use of wood resources and untapped resources in developing, producing, and selling our ecological products as part of our efforts to realize a recycling-oriented society.

Minimize environmental burden

Minimize environmental burden

We strive to reduce emissions of greenhouse gases, waste, and chemicals in all our business activities and efforts to promote conservation of the environment and prevention of pollution.

Contribution to biodiversity

Contribution to biodiversity

We will promote the procurement of wood resources with consideration for biodiversity.



We will continue to be a company trusted by our customers and society by complying with laws, regulations, and company regulations related to our business activities.



We strive to disseminate information proactively and enhance communication with various groups in society.

Environment Management

Basic Approach

The Daiken Group is continuously striving to improve our environmental activities throughout the Group with the formulation of the medium-term environment plan to achieve our environmental policy while optimizing the Environment Management System (EMS). Furthermore, for efficient operation, we promote and develop the Quality and Environmental Management System (QEMS) to be integrated with the Quality Management System (QMS).

Structure to Promote Environment Management

Structure to Promote Environment Management

The 5th Medium-Term Environmental Plan (for fiscal 2017-2019)

The 5th Medium-Term Environmental Plan


Soil improvement additive, DW fiber, using cascading domestic wood, contributes to building a low-carbon society

The Daiken Group stated three policies: becoming a sustainable society, expansion of the use of domestic wood, and the comprehensive utilization of wood. In order to achieve these policies, we have developed the soil improvement additive, DW fiber, in collaboration with JCE Co., Ltd., by utilizing our strength in material development technologies. DW fiber has been used for a variety of purposes, including the project of total cascading of wood that is carried out in Nichinan-cho, Tottori Prefecture, and is attracting attention as a new approach to environmental conservation.

DW fiber

A new material to create new value based on effective use of resources

DW fiber is a coarse, fibrous soil improvement additive created from domestically produced wood chips where their fibers are loosened by adding fluvic acid, which facilitates the growth of plants. By mixing soil with DW fiber, which has excellent water retention, permeability and contains fluvic acid, the growth of plants is facilitated, the soil environment is improved, salt damage is prevented, and landslides in mountainous areas are prevented by afforestation. Its capabilities can be used in various situations. In addition, the wood material can also decrease the environmental burden. The raw material of DW fiber is mainly wood offcuts and untapped resources generated while processing wood. It contributes to the cascading use of wood resources and the revitalization of forestry in Japan.
On March 20, 2018, the Daiken Group’s initiatives were jointly awarded with JCE Co., Ltd., the Gold prize in the corporation category of the Japan Resilience Award (2018), which commends advanced activities for the building of a resilient society for the next generation.


Business base for total cascading of wood in Nichinan-cho, Tottori

TWe launched a project for the total cascading of wood by using DW fiber with Nichinan-cho in Tottori Prefecture. We purchase wood offcuts that are generated when producing LVL* from the local LVL manufacturer, Orochi Co.,Ltd., to produce the DW fiber. The DW fiber is sold to construction companies through Sansui Navico, a group company of JCE Co., Ltd., and is used to improve coastal forests and the greening of roads all over Japan to support reforestation and local forestry.

*LVL = Laminated Veneer Lumber
An engineered wood product that is laminated with multiple layers of a single board aligned with the fiber direction

Conceptual image of commercializing total cascading of wood

Initiatives for prevention of global warming

In the past, the Daiken Group has shifted from fossil fuels, such as heavy oil, to biomass energy fueled by wood chips derived from building scraps in order to reduce greenhouse gas emissions. We also installed our largest biomass boiler at the Okayama plant in July 2016 leading to an increase in biomass energy to 50% of the total energy used in the production sites in Japan for fiscal 2018. With these efforts, we were able to reduce greenhouse gas emissions by 20% compared with fiscal 2014.

Biomass boiler in the Okayama Plant

Trends in the energy used in production sites in Japan

Recycling of waste materials

The Daiken Group is aiming to develop a recycling-oriented society and is recycling waste by reusing the wood offcuts and defective products generated during the manufacturing process for the product materials.
In fiscal 2018, the waste emissions generated during the manufacturing process were 48,800 metric tons. We promoted their use as materials or for heating, which resulted in simple incineration being reduced to 1% and the recycling rate reaching 91%.
We continue to further improve the recycling rate.

*Recycling rate =Amount of recycled resources/Total amount of waste generated x 100(%)
Amount of recycled resources = Valuable + Use for materials + Use for heat

Breakdown of waste processing

Effective use of recycling/untapped resources

The Daiken Group is committed to the effective use of wood resources and untapped resources in developing and producing its products as part of our efforts to develop a sustainable society. In fiscal 2018, the utilization of recycled materials was 63%, and untapped resources were 5% of the raw materials used for manufacturing. In addition, we prioritized the use of environmentally friendly wood, such as plywood made from planted trees, thus we improved the utilization ratio of plantation resources to 12%. We continue to strive to use sustainable resources.

Current rate of using recycled resources in products