| Name | Country | Market Cap (US$) |
|---|
| Kemira Iberica, S.A. | Spain | Private |
| Kentucky Electric Steel, Llc | United States | Private |
| Kes Acquisition Company | United States | Private |
| Kesoram Industries Limited | India | Private |
| Kind & Co., Edelstahlwerk, KG | Germany | Private |
| King Industries, Inc. | United States | Private |
| KING TAICHANG STEEL WORKS CO., LTD. | Taiwan | Private |
| KINMEN LIQUOR FACTORY INDUSTRY CO., LTD. | Taiwan | Private |
| Kleen-Flo Tumbler Industries Limited | Canada | Private |
| Klüber Lubrication Austria Gesellschaft mit beschränkter Haftung | Austria | Private |
| Kmg-Bernuth Inc | United States | Private |
| KNAUF INTERFER AG | Germany | Private |
| KOBAYASHI PHARMACEUTICAL OF SENDAI CO., LTD. | Japan | Private |
| Kömmerling France S.A.R.L. | France | Private |
| KONICA MINOLTA SUPPLIES MANUFACTURING FR | France | Private |
| KONTI STEEL HELLAS S.A. | Greece | Private |
| KOOLAND IRON & STEEL WORKS LTD. | Taiwan | Private |
| Koppers Australia Ltd. | Australia | Private |
| KOPPERS CARBON MATERIALS & CHEMICALS PTY LTD | Australia | Private |
| KOPPERS INVESTMENT SUBSIDIARY PTY LTD | Australia | Private |
| KOPPERS WOOD PRODUCTS PTY LTD | Australia | Private |
| KOUSEI CO,LTD. | Japan | Private |
| KOVAN STAINLESS STEEL MANUFACTURE | Singapore | Private |
| KRAKATAU STEEL, PT | Indonesia | Private |
| Krämer Draht- und Litzenwerk GmbH | Germany | Private |
| KRATON POLYMERS INTERNATIONAL LTD | United Kingdom | Private |
| KRATON Polymers LLC | United States | Private |
| Kremni ZAO | Russia | Private |
| Kroy Building Products, Inc. | United States | Private |
| KS GALVA, K.K. | Japan | Private |
| KS STAINLESS STEEL WORKS | Singapore | Private |
| KSH Stahlbau Hannover GmbH | Germany | Private |
| Kum Kang Trading Company | South Korea | Private |
| KUMBA BASE METALS LTD | South Africa | Private |
| Kumho P&B Chemical Co., Ltd. | South Korea | Private |
| Kumho Shell Chemical Corporation | South Korea | Private |
| KUN YI STEEL & IRON CO., LTD. | Taiwan | Private |
| Kunming Iron & Steel (Group) Co., Ltd. | China | Private |
| Kunshan DAEKyung Stainless Steel Co., Ltd. | China | Private |
| Kurogane Kasei Co.,Ltd. | Japan | Private |
| KUWAIT PETROLEUM INTERNATIONAL LUBRICANTS (UK) LTD | United Kingdom | Private |
| KUZNIA JAWOR S A | Poland | Private |
| Kweichow Moutai Co., Ltd. | China | Private |
| KYODO SAKUSAN CO.,LTD. | Japan | Private |
| KYODO YUSHI CO.,LTD. | Japan | Private |
| KYOWA HAKKO CHEMICAL CO.,LTD. | Japan | Private |
| KYOZAI SAISEKI K.K. | Japan | Private |
| KYUSHU AROMATICS K.K. | Japan | Private |
| LA.RE. LAMINATOI DEL REGHENA SPA | Italy | Private |
| LABO CENTRE FRANCE | France | Private |
| Lafarge Roofing Components GmbH & Co. KG | Germany | Private |
| Lake Erie Steel GP Inc | Canada | Private |
| Lámina y Placa de Monterrey, S.A. de C.V. | Mexico | Private |
| LAMINES MARCHANDS EUROPEENS | France | Private |
| LAMINOIR DE DUDELANGE SA | Luxembourg | Private |
| Laminoirs du Ruau SA | Belgium | Private |
| Lanxess Corporation | United States | Private |
| LANXESS S.A. | Argentina | Private |
| Lanzhou Vinylou (Group) Co., Ltd. | China | Private |
| LAYBOND PRODUCTS LTD | United Kingdom | Private |
| Lehigh Heavy Forge Corp | United States | Private |
| Lenz Kämper GmbH & Co. KG | Germany | Private |
| LG Petrochemical Company, Ltd. | South Korea | Private |
| LIAN HOCK FOUNDRY | Singapore | Private |
| Lianfeng Iron & Steel (Zhangjiagang) Co.,Ltd. | China | Private |
| Lianhua Ajinomoto Co., Ltd. | China | Private |
| Lianyuan Iron & Steel Group Co., Ltd. | China | Private |
| LINDAB s.r.o. | Czech Republic | Private |
| Lindau Chemicals, Inc | United States | Private |
| Lindgens & Söhne GmbH & Co. | Germany | Private |
| Lingyuan Iron & Steel Group Co.,Ltd. | China | Private |
| Linyi Jiangxin Steel Co., Ltd. | China | Private |
| LIO CHENG KUNG HARDWARE ENTERPRISE CO., LTD. | Taiwan | Private |
| LION AKZO CO.,LTD. | Japan | Private |
| LION CHEMICAL CO.,LTD. | Japan | Private |
| LIP LEE IRON FACTORY | Singapore | Private |
| Liqui-Moly Gesellschaft mit beschränkter Haftung | Germany | Private |
| LLOYDS METALS & ENGINEERS LIMITED | India | Private |
| Logstor A/S | Denmark | Private |
| Longtain SA | Belgium | Private |
| Lonza Inc. | United States | Private |
| LOTUS JOINT STOCK COMPANY | Vietnam | Private |
| LOTUS STEEL JOINT STOCK COMPANY | Vietnam | Private |
| Louis Dreyfus Commodities Bioenergia S.A. | Brazil | Private |
| LPN PLATE MILL PUBLIC COMPANY LIMITED | Thailand | Private |
| Lubricantes de América, S.A. de C.V. | Mexico | Private |
| Lubrizol Canada Limited | Canada | Private |
| Lubrizol do Brasil Aditivos Ltda. | Brazil | Private |
| LUBRIZOL JAPAN LIMITED | Japan | Private |
| Lucite International | United Kingdom | Private |
| Lucite International (China) Chemical Industry Co., Ltd. | China | Private |
| Lucta, S.A. | Spain | Private |
| Lunday-Thagard Co | United States | Private |
| Lyondell Chemical Worldwide, Inc. | United States | Private |
| LYONDELL CHIMIE FRANCE | France | Private |
| LYONDELL CHIMIE TDI | France | Private |
| Magang (Group) Holding Co., Ltd. | China | Private |
| MAGNETTO-TOPY WHEELS (UK) LTD | United Kingdom | Private |
| MAGYAR ALLAMVASUTAK Szolnoki Jarmujavito Korlatolt Felelossegu T | Hungary | Private |
| MAITHAN ALLOYS LIMITED | India | Private |
|
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