營建業年投入一億噸物料，拆除與挖方產生七千萬噸可再利用資源，但設計端缺乏綠BIM工具、拆除端又無溯源機制，形成巨大數據黑箱．碳甲郎提出營建C流，整合複合生命週期評估、BIM、產品數位護照（DPP）與區塊鏈，讓物料投入與廢棄物產出「看得見、算得準、追得到」。本案可提升20%減碳與再利用率，是營建業邁向2050淨零的關鍵。
BIM建築資訊模型
DPP產品數位護照
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