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ＣＯ.,ＬＴＤ.","holder_sec_code":"1942","doc_id":"S100YDOZ","period_end":"2026-03-31","holder_table":"reporting","shares":174000,"book_value_yen":1007000000,"prior_shares":174000,"prior_book_value_yen":456000000,"purpose_ja":"（保有目的）設備工事業における主に環境設備工事部門の強化を目的とした設備会社間の連携・維持強化（定量的な保有効果）（注２）","reciprocal":"有","pct_outstanding":0.8413599393911378,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.24822091908293833,"pct_of_holder_assets":0.15842849006793389,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":405687000000,"holder_total_assets_yen":635618000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"東テク株式会社","holder_name_en":"TOTECH CORPORATION","holder_sec_code":"9960","doc_id":"S100YGTS","period_end":"2026-03-31","holder_table":"reporting","shares":145200,"book_value_yen":840000000,"prior_shares":145200,"prior_book_value_yen":381000000,"purpose_ja":"商品販売及び工事セグメントにおける主要販売先であり、株式を保有することで安定的な取引関係を維持しております。定量的な保有効果については経営戦略上、記載が困難でありますが、保有の合理性は当該販売先への売上取引実績及び配当金の受取状況等により検証しております。","reciprocal":"無","pct_outstanding":0.702100363216053,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":1.1402198995520565,"pct_of_holder_assets":0.729673384294649,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":73670000000,"holder_total_assets_yen":115120000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"日本トランスシティ株式会社","holder_name_en":"Japan Transcity Corporation","holder_sec_code":"9310","doc_id":"S100YGL7","period_end":"2026-03-31","holder_table":"reporting","shares":null,"book_value_yen":775000000,"prior_shares":null,"prior_book_value_yen":351000000,"purpose_ja":"同社グループは当社の事業上における主要施設や電気設備等の工事を行っており、中長期的な経済合理性を評価し、取引関係の維持・強化のため同社株式を保有しております。取引の内容となるため、定量的な保有効果は記載できません。","reciprocal":"有","pct_outstanding":null,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.7312838513653778,"pct_of_holder_assets":0.4435617724156088,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":105978000000,"holder_total_assets_yen":174722000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"日本電子株式会社","holder_name_en":"JEOL Ltd.","holder_sec_code":"6951","doc_id":"S100YIDD","period_end":"2026-03-31","holder_table":"reporting","shares":119020,"book_value_yen":689000000,"prior_shares":119020,"prior_book_value_yen":312000000,"purpose_ja":"構内設備の取引関係の維持による工場設備の安定性確保のため","reciprocal":"有","pct_outstanding":0.5755095401513404,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.47550690830791315,"pct_of_holder_assets":0.28468015833009674,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":144898000000,"holder_total_assets_yen":242026000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"東京応化工業株式会社","holder_name_en":"TOKYO OHKA KOGYO CO., LTD.","holder_sec_code":"4186","doc_id":"S100XT0N","period_end":"2025-12-31","holder_table":"reporting","shares":99616,"book_value_yen":661000000,"prior_shares":99616,"prior_book_value_yen":276000000,"purpose_ja":"当社の重要な調達先であり、製造技術面における業務シナジーの維持・拡大を目的に同社株式を保有しております。なお、②aに記載の方法にて株式保有の合理性を確認しております。","reciprocal":"有","pct_outstanding":0.4816834007033769,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.2728034370756792,"pct_of_holder_assets":0.1971415959820097,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":242299000000,"holder_total_assets_yen":335292000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"株式会社　オーテック","holder_name_en":"OTEC CORPORATION","holder_sec_code":"1736","doc_id":"S100YKWY","period_end":"2026-03-31","holder_table":"reporting","shares":90068,"book_value_yen":521498000,"prior_shares":89778,"prior_book_value_yen":235579000,"purpose_ja":"環境システム事業における空調自動制御工事の受注活動及び管工機材事業における資機材の販売活動を円滑に進める目的から株式を保有しております。また、上記の目的から持株会で買付を行い前事業年度に比べて株式数が増加いたしました。","reciprocal":"無","pct_outstanding":0.43551498287977586,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":1.9253908373787618,"pct_of_holder_assets":1.3264651595149783,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":27085306000,"holder_total_assets_yen":39314866000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社千葉銀行","holder_name_en":"The Chiba Bank, Ltd.","holder_sec_code":"8331","doc_id":"S100YDSE","period_end":"2026-03-31","holder_table":"reporting","shares":56870,"book_value_yen":329000000,"prior_shares":56870,"prior_book_value_yen":149000000,"purpose_ja":"千葉県千葉市に事業拠点を持つ環境のトータルエンジニアリング企業であり、発行会社との連携強化を通じて地域経済の発展や地域雇用の維持・創出に貢献できること、また発行会社及びその従業員との銀行取引（預金・為替・融資等）拡大が当行の営業基盤を強固にし、中長期的な企業価値向上にも資すると考え保有しております。","reciprocal":"有","pct_outstanding":0.27498930892628737,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.026167183647498607,"pct_of_holder_assets":0.0015510248762232648,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":1257300000000,"holder_total_assets_yen":21211781000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"生化学工業株式会社","holder_name_en":"SEIKAGAKU CORPORATION","holder_sec_code":"4548","doc_id":"S100YDGT","period_end":"2026-03-31","holder_table":"reporting","shares":49170,"book_value_yen":284000000,"prior_shares":49170,"prior_book_value_yen":129000000,"purpose_ja":"当社の設備調達における取引関係等を円滑にするため","reciprocal":"有","pct_outstanding":0.23775671390725428,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.3771630433339088,"pct_of_holder_assets":0.328916890577226,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":75299000000,"holder_total_assets_yen":86344000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"フジッコ株式会社","holder_name_en":"FUJICCO CO., LTD.","holder_sec_code":"2908","doc_id":"S100YF97","period_end":"2026-03-31","holder_table":"reporting","shares":42979,"book_value_yen":248000000,"prior_shares":42979,"prior_book_value_yen":112000000,"purpose_ja":"産業設備工事等の取引を行っており、事業上の関係を勘案し、同社との良好な関係の維持、強化を図るために継続して保有しております。","reciprocal":"無","pct_outstanding":0.20782074043156157,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.3558820997043883,"pct_of_holder_assets":0.3096555082470751,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":69686000000,"holder_total_assets_yen":80089000000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"サワイグループホールディングス株式会社","holder_name_en":"SAWAI GROUP HOLDINGS Co., Ltd.","holder_sec_code":"4887","doc_id":"S100YITS","period_end":"2026-03-31","holder_table":"largest","shares":31460,"book_value_yen":182000000,"prior_shares":31460,"prior_book_value_yen":83000000,"purpose_ja":"主要設備メンテナンス取引先として良好な関係を維持していくことの重要性を考慮して保有しております。なお、定期的に定量的な保有効果を検証しております。","reciprocal":"有","pct_outstanding":0.15212174536347814,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.10192880664889446,"pct_of_holder_assets":0.05056693311550654,"holder_equity_basis":"ifrs_consolidated_excl_nci","holder_equity_yen":178556000000,"holder_total_assets_yen":359919000000,"implausible":false,"reciprocal_held_both_ways":true},{"holder_name":"協立エアテック株式会社","holder_name_en":"KYORITSU AIR TECH INC.","holder_sec_code":"5997","doc_id":"S100XUIL","period_end":"2025-12-31","holder_table":"reporting","shares":15300,"book_value_yen":101592000,"prior_shares":15300,"prior_book_value_yen":42518000,"purpose_ja":"・同社は当社の空調製品の販売先であり、相互の事業拡大や取引関係の強化を目的に株式を保有しております。","reciprocal":"無","pct_outstanding":0.07398164984301384,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":1.0300890813315315,"pct_of_holder_assets":0.6470396528333429,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":9862448000,"holder_total_assets_yen":15701047000,"implausible":false,"reciprocal_held_both_ways":false},{"holder_name":"株式会社オータケ","holder_name_en":"OTAKE CORPORATION","holder_sec_code":"7434","doc_id":"S100Z9XT","period_end":"2026-05-31","holder_table":"reporting","shares":205,"book_value_yen":1299000,"prior_shares":158,"prior_book_value_yen":524000,"purpose_ja":"当社の主要販売取引先として関係維持・強化のため同社株式を保有しております。株式数の増加は取引先持株会を通じた取得によるものです。","reciprocal":"無","pct_outstanding":0.000991257399857375,"pct_unavailable":null,"pct_basis_period_end":"2026-03-31","pct_share_classes":1,"pct_of_holder_equity":0.007437075130603971,"pct_of_holder_assets":0.004205613785373898,"holder_equity_basis":"jgaap_consolidated","holder_equity_yen":17466544000,"holder_total_assets_yen":30887287000,"implausible":false,"reciprocal_held_both_ways":false}],"reclassified":[],"reclassified_note":"As filed, from the annual report's 保有目的を変更した投資株式 table. direction=to_pure means the filer moved the holding from a policy shareholding to 純投資目的 (pure investment); the shares are not necessarily sold, and the position leaves the named policy table in the year of the change. direction=to_policy is the reverse. fy_of_change_ja is the fiscal year the filer states the change took effect, verbatim — some filers list more than one. A filing repeats these rows for several years after the change, so this is a standing disclosure, not a one-year event.","implausible_note":"A row is flagged implausible when its two filed numbers are mutually impossible — book value ÷ shares of ¥1,000,000 or more, which no listed Japanese share reaches. It is a filer tagging error (a value entered at the wrong scale, or a share count in thousands), not an extraction error: the values match the filing's XBRL exactly. Flagged rows are still returned, exactly as filed, but are excluded from the yen aggregates here and counted in excluded_positions / excluded_yen so the exclusion is visible.","notes":[],"notes_note":"The filing's own numbered footnotes to the named policy table, verbatim. The XBRL numbers them (注)1, (注)2 … and gives no link back to a row, so a note is tied to a position only where it names that issuer.","flows":[{"holder_table":"reporting","share_class":"listed","issues_increased":8,"acquisition_cost_yen":33000000,"issues_decreased":3,"sale_proceeds_yen":152000000,"entity_scope":"parent_only","share_scope":"listed"},{"holder_table":"reporting","share_class":"unlisted","issues_increased":null,"acquisition_cost_yen":null,"issues_decreased":1,"sale_proceeds_yen":1000000,"entity_scope":"parent_only","share_scope":"unlisted"}],"flows_note":"The filer's own tally, as filed, of how many issues increased or decreased during the year and the yen involved — acquisition cost for increases, sale proceeds for decreases. Read against the reclassification table this separates what was actually sold from what merely changed category. Counts are as filed and are not corrected for filer tagging errors.","no_reduction_measure":"This product holds sale proceeds (売却価額), as filed, for one fiscal year. It does NOT hold a book-value-reduction measure. The two are different measures and must never be presented as equivalent.","scale":{"policy_total_yen":13907000000,"listed_yen":13269000000,"unlisted_yen":638000000,"listed_issues":32,"unlisted_issues":7,"equity_yen":66351000000,"equity_basis":"jgaap_consolidated","total_assets_yen":100868000000,"assets_basis":"jgaap_consolidated","pct_of_equity":20.95974438968516,"pct_of_assets":13.787326010231194,"equity_basis_label":"Consolidated net assets (Japanese GAAP)","assets_basis_label":"Consolidated net assets (Japanese GAAP)","equity_calc":"total policy shareholdings ÷ shareholders' equity × 100, both as filed in this annual securities report","assets_calc":"total policy shareholdings ÷ total assets × 100, both as filed in this annual securities report"},"scale_entities":[{"holder_table":"reporting","share_class":"listed","book_value_yen":13269000000,"issue_count":32,"holder_table_label":"The filer itself","entity_scope":"parent_only","share_scope":"listed"},{"holder_table":"reporting","share_class":"unlisted","book_value_yen":638000000,"issue_count":7,"holder_table_label":"The filer itself","entity_scope":"parent_only","share_scope":"unlisted"}],"scale_history":[{"year":"2022","period_end":"2022-03-31","policy_total_yen":9350000000,"equity_yen":42462000000,"equity_basis":"jgaap_consolidated","pct_of_equity":22.019688191795016,"pct_of_assets":14.678639831705862},{"year":"2023","period_end":"2023-03-31","policy_total_yen":8666000000,"equity_yen":43375000000,"equity_basis":"jgaap_consolidated","pct_of_equity":19.979250720461096,"pct_of_assets":13.656491797595223},{"year":"2024","period_end":"2024-03-31","policy_total_yen":10638000000,"equity_yen":49186000000,"equity_basis":"jgaap_consolidated","pct_of_equity":21.628105558492255,"pct_of_assets":13.955501915306712},{"year":"2025","period_end":"2025-03-31","policy_total_yen":9562000000,"equity_yen":52948000000,"equity_basis":"jgaap_consolidated","pct_of_equity":18.059227921734532,"pct_of_assets":11.928196300038671},{"year":"2026","period_end":"2026-03-31","policy_total_yen":13907000000,"equity_yen":66351000000,"equity_basis":"jgaap_consolidated","pct_of_equity":20.95974438968516,"pct_of_assets":13.787326010231194}],"scale_note":"The policy total is Official (as filed) — the filing's own total carrying amount for the whole policy bucket, listed and unlisted, summed across the entities the filing discloses. It is a floor: holdings at group companies the filing does not name are disclosed nowhere and are not included. The percentages are calculated, not filed, and carry their formula. equity_basis names which figure the denominator is, because filers report under Japanese, IFRS or US accounting standards and an adopter of the latter two stops tagging the Japanese consolidated figure — a parent-only denominator is a different measure and is labelled as one, never silently mixed with a group figure. Percentages are null where equity or total assets is missing or not positive; missing is never shown as zero.","scale_reference":"ISS's Japan proxy voting guidelines recommend a vote against the top executive at a company that allocates 20 percent or more of its net assets to cross-shareholdings, a policy effective from February 2022. ISS counts unilateral holdings, not only mutual ones.","ownership_calc":"shares held ÷ (issuer's issued shares − treasury shares) × 100, both as filed, the denominator taken from the issuer's own annual securities report nearest the holding's fiscal year end","ownership_note":"Derived, not filed. The denominator is the issuer's own reported issued shares less treasury shares, from its annual report nearest this holding's fiscal year end on either side — pct_basis_period_end gives that date, and it can fall after the holding's date where that report is the closer one. For a single-class listed stock this equals the stake's share of market capitalisation. It is null where the issuer files no annual report we hold; where the issuer's share count moves by half or more across the window, because a split or issue makes the share base indeterminate; and where the result would exceed 100%, which is a data fault rather than a stake. It is less exact where the issuer has more than one share class (pct_share_classes > 1), because treasury shares are reported across all classes.","holder_share_calc":"this position's book value ÷ the holder's shareholders' equity (or total assets) × 100, both as filed in the holder's own annual securities report","holder_share_note":"The mirror of pct_outstanding. That sizes a stake against the ISSUER — how much of the issuer this holder owns. pct_of_holder_equity and pct_of_holder_assets size the same position against the HOLDER: how much of its own capital is committed to this one name. Calculated, not filed. Null where the holder's filing gives no usable denominator, never zero. holder_equity_basis says which accounting figure the denominator is, and a parent_only basis is not comparable with a consolidated one. A position CAN legitimately exceed 100% of equity — a holder whose book equity is smaller than one long-held stake is a real and commercially interesting case, not an error — so no ceiling is imposed. Extreme values are worth checking against the filing: where the position's own two filed numbers are mutually impossible the row is marked `implausible`, but that test catches only scale errors visible per share, so it does not catch every bad figure. The book value and share count are returned alongside so the reader can check.","action_calc":"keyword match over the filing's own stated purpose and table footnotes: 株式分割、株式併合、株式交換、株式移転、会社分割、合併、持株会社、商号変更、公開買付、上場廃止","ratio_calc":"current shares ÷ prior shares where that ratio is an exact whole number (or its exact reciprocal) — the signature of a split or a consolidation rather than a trade","history":[{"year":"2022","period_end":"2022-03-31","named_holdings":35,"book_value_yen":8694000000},{"year":"2023","period_end":"2023-03-31","named_holdings":35,"book_value_yen":8008000000},{"year":"2024","period_end":"2024-03-31","named_holdings":35,"book_value_yen":9897000000},{"year":"2025","period_end":"2025-03-31","named_holdings":35,"book_value_yen":8908000000},{"year":"2026","period_end":"2026-03-31","named_holdings":34,"book_value_yen":13255000000}],"history_note":"One point per annual report filed. Each year's book value is as filed; book values are fair-valued at period end, so a change reflects both trading and market moves.","provenance":{"trust":"official","note":"Figures exactly as filed in each company's 有価証券報告書 (annual securities report), EDINET. Raw filings archived with SHA-256; doc_id links to the source filing."}}