三五（Sango Co., Ltd.）
Type of Business: 汽車零部件製造
Address: 日本愛知縣
Number of employees: 2,790人
三五（SANGO）創立於 1928 年，是一家深耕汽車排氣系統、車身壓拉件及次級鋼鐵製品的專業製造大廠。作為眾多主流汽車製造商的核心供應商，三五在日本中部設有 8 座核心工廠，並於國內外佈局共 16 個營運據點。憑藉在汽車零部件與次級鋼鐵加工領域沉澱的深厚專業技術，三五正積極開拓全新商業契機，例如跨足建築管道解決方案等新領域；同時，集團持續投入強大的研發動能，以精進並深化其排氣系統核心技術。此外，三五將『環境守護』視為企業發展的底層邏輯，矢志投入碳中和與生物多樣性保育等永續倡議
- Challenge
- 深化集團對環境議題的承諾，並將三五（SANGO）塑造成為深具環境意識的綠色標竿企業。
- 全面提升集團在 CDP（碳揭露專案）問卷回覆的品質與全面性。此舉為未來具體的優化領域提供了更為詳盡的指引。
- Solution
- ASUENE CDP 碳揭露評級顧問服務
- Impact
- 精準掌握了集團在 CDP 報告披露與環境倡議中，極具價值的核心優化領域與前瞻洞察。
- 成功賦能集團開發並落實高效的減排措施，將戰略轉化為實質行動。
領航綠色升級：全面驅動汽車供應鏈之碳中和戰略落地
三五（SANGO）身為全球汽車零部件領域的領先製造商與供應商，持續為多家跨國主流車廠提供核心關鍵構件。集團最獨特的競爭優勢，在於構築了橫跨『零部件加工』與『次級鋼鐵材料精整』的垂直一體化生產製程。這種涵蓋全鏈條的整合能力，賦能三五得以自主掌控從上游原材料到下游終端成品的完整生產線，使其在競爭激烈的汽車工業中脫穎而出，確立了無可替代的市場地位。
以汽車排氣系統為核心業務，三五（SANGO）持續推動環境友善產品的革新——包含整合觸媒轉化技術以淨化廢氣的排氣岐管，以及高效抑制噪聲污染的消音系統。在以核心產品厚植環境治理基石的同時，管理階層於 2017 年前瞻性地發布了『三五環境挑戰 2050』長遠藍圖，將去碳化路徑提升至集團核心戰略高度，全力衝刺碳中和目標。
This project promotes sustainable practices throughout the entire product lifecycle. Sango has established an ambitious goal to reduce CO2 emissions by 50% by 2030 compared to 2013 levels, surpassing the Japanese government’s national target of a 46% reduction. Through these comprehensive efforts, the company aims to evolve its market identity from a traditional muffler manufacturer into a leading environmentally conscious enterprise.
However, while advancing these sustainable business practices, Sango encountered operational challenges regarding environmental information disclosure, particularly when responding to CDP requests from multiple major customers. Because requirements such as Scope 3 CO2 emissions calculations exceeded internal administrative capabilities, the company decided to seek specialized external consulting support for its CDP reporting. Simultaneously, management recognized the necessity for new, structured initiatives to achieve true carbon neutrality beyond merely answering customer questionnaires. Sango sought a strategic partner capable of providing valuable insights and long-term guidance to help achieve these environmental benchmarks.
Selecting ASUENE for CDP Expertise and Tailored Consulting
Sango first engaged with ASUENE during an active search for external consulting support to manage CDP disclosures and explore new carbon neutrality initiatives. Confronted with the immediate challenge of calculating complex Scope 3 emissions, Sango turned to ASUENE for expert guidance.
The primary factor behind selecting ASUENE was the provider’s high industry reliability, demonstrated by a proven track record of over 4,000 corporate implementations and prestigious recognition, including the Ministry of the Environment’s Environmental Startup Ministerial Award in 2022. Furthermore, ASUENE stands as the only organization in Japan certified as a CDP Climate Change Consulting and Scoring Partner, which reinforced Sango’s confidence in their domain expertise.
During initial consultations, ASUENE demonstrated high responsiveness and a strong ability to adapt to Sango’s specific corporate structure. Because standard CDP questionnaires are typically structured for publicly listed corporations, ASUENE provided specialized advice tailored to how Sango, as a privately held company, could most effectively formulate its disclosures. The consultants also shared critical, up-to-date information regarding shifting environmental regulations and global best practices. These strategic insights proved instrumental in refining the execution of the Sango Environmental Challenge 2050.
By leveraging ASUENE’s consulting services, Sango successfully visualized its administrative gaps and identified new operational challenges within its sustainability framework. This clear visualization of areas requiring improvement has served as a primary benefit of the partnership. Moving forward, Sango anticipates continued strategic guidance from ASUENE to not only optimize its annual CDP scores but also elevate its overarching environmental initiatives.
Realizing Sustainable Operations and Fostering Corporate Pride
Looking to the future, Sango remains committed to improving its CDP scores, refining its Scope 3 emissions calculations, and systematically strengthening its broader environmental initiatives. The Sango Environmental Challenge 2050 outlines specific corporate objectives based on the framework of “Three Values to Create and Five Challenges to Overcome,” a philosophy derived directly from the company’s name.
The Three Values consist of expanding and creating environmentally friendly products, reducing the environmental impact of business activities, and conserving the natural environment. Sango places a heavy strategic emphasis on environmental conservation, maintaining an active tree-planting initiative since 2006. This program originally launched following the discovery of regulated substances at the Nagoya factory, the historical birthplace of the company.
Initiated as a localized soil remediation project, the campaign has successfully planted approximately 320,000 trees to date, with management targeting a milestone of 350,000 trees by 2028. While Sango remains dedicated to developing green products and eliminating operational energy waste, industrial manufacturing and logistics inevitably generate CO2 emissions. Through continuous tree-planting efforts, the company actively seeks to offset these residual emissions and contribute directly to a decarbonized society.
Concurrently, the Five Challenges declared by the company include:
- Minimizing lifecycle CO2 emissions
- Minimizing new vehicle CO2 emissions
- Minimizing waste from production activities
- Building a society in harmony with nature
- Establishing a robust environmental management system
To minimize production waste, Sango has established rigorous reduction targets, working diligently to mitigate not only CO2 emissions but also other industrial pollutants, including wastewater and chemical substances.
