Furthermore, at properties we own that have acquired certifications (such as DBJ Green Building certification) through listed REITs operated by asset management companies, we are working to reduce our environmental impact by promoting energy savings and more efficient energy use. Company-Owned Forests “Mitsui’s Forests” (Japan) Mitsui has obtained forest certification for all Mitsui’s Forests (approximately 44,000 hectares) throughout Japan under two international standards: FSC® certification*1 (FSC®-C057355) and SGEC certification*2 (Certificate no.