GIS產品原物料皆符合認證標準規範，且原物料無使用衝突礦產。為避免使用到來自衝突礦產地區之原物料，GIS訂有《衝突礦產管理作業規範》、《管制物質作業規範》、《供應商管理作業規範》。新使用材料、材料供應商皆須填寫物質成份宣告表， 並依照採購流程及相關GP規定進行QSA審核確認，稽核項目包括原物料溯源及衝突礦產使用，100%符合認證標準規範。
GIS積極與終端客戶一起行動，每年對供應鏈做衝突礦物盡職調查，通過與RMI官網公佈的<CMRT審核驗證表>查驗冶煉廠認證證書，識別、揭露，並推動不合格冶煉廠和精煉廠的移除。應客戶要求，2024年對197家與GIS直接交易之供應商展開調查，回覆率100%，調查結果共涉及312家冶煉廠/精煉廠，含14家非洲冶煉廠均在客戶合格名單中，對冶煉廠統計分析如下：
14家非洲冶煉廠資訊(摘錄自RMI官網)
Smelter Identification Number) | Metal | Smelter Name | Smelter Country | Smelter City | Smelter Facility Location: State / Province | |
1 | CID001512 | Gold | Rand Refinery (Pty) Ltd. | SOUTH AFRICA | Germiston | Gauteng |
2 | CID003575 | Gold | Metal Concentrators SA (Pty) Ltd. | SOUTH AFRICA | Kempton Park | Gauteng |
3 | CID003387 | Tin | Luna Smelter, Ltd. | RWANDA | Kigali | City of Kigali |
4 | CID004065 | Tin | Mining Minerals Resources SARL | CONGO, DEMOCRATIC REPUBLIC OF THE | Lubumbashi | Haut-Katanga |
5 | CID003261 | Cobalt | Kamoto Copper Company | CONGO, DEMOCRATIC REPUBLIC OF THE | Kolwezi | Lualaba |
6 | CID003279 | Cobalt | Mine de Bou-Azzer | MOROCCO | Tazenakht | Drâa-Tafilalet |
7 | CID003280 | Cobalt | Compagnie de Tifnout Tiranimine | MOROCCO | Marrakech | Marrakech-Safi |
8 | CID003264 | Cobalt | Chemaf Etoile | CONGO, DEMOCRATIC REPUBLIC OF THE | Lubumbashi | Haut-Katanga |
9 | CID003266 | Cobalt | Societe pour le Traitment du Terril de Lubumbashi (STL) | CONGO, DEMOCRATIC REPUBLIC OF THE | Lubumbashi | Haut-Katanga |
10 | CID003275 | Cobalt | La Compagnie de Traitement des Rejets de Kingamyambo S.A. (Metalkol S.A.) | CONGO, DEMOCRATIC REPUBLIC OF THE | Lubumbashi | Haut-Katanga |
11 | CID004608 | Cobalt | Impala Refineries – Base Metals Refinery (BMR) | SOUTH AFRICA | Springs | Gauteng |
12 | CID004614 | Cobalt | Impala Rustenburg | SOUTH AFRICA | Rustenburg | North-West |
13 | CID003232 | Cobalt | Dynatec Madagascar Company | MADAGASCAR | Toamasina | Toamasina |
14 | CID003429 | Cobalt | Tenke Fungurume Mining SA | CONGO, DEMOCRATIC REPUBLIC OF THE | Kolwezi | Lualaba |