• O-Kong Corporation
• 82-32-822-5050
• South Korea

• O. C. Lugo Company Inc.
• (845)708.7080
• United States

• O. C. Specialties Private Limited
• +(91)-(22)-26269200
• India

• O.BERK Company
• +1-908-851-9500
• United States

• O.C. Lugo Co. Inc.
• (845) 480-5121
• United States

• O'Laughlin Chemical Co., Ltd
• +852 2411 4633
• China

• O'Rourke Petroleum Products
• +1-713-672-4500
• United States

• O&V Lub Chem Corporation
• +82-(63)-277-1258
• Korea

• Oak Ridge National Laboratory
• (423) 574-6984
• United States

• Oak-Mitsui Inc.,
• United States

• Oakliffe Rotajet Ltd,
• 01924 272604
• United Kingdom

• Oakwood Laboratories, L.L.C.
• (440)359-0000
• United States

• Oakwood Products, Inc.
• 803-739-8800
• United States

• OAO Ingushneftegazprom Company
• +7 (495) 647 8623
• Russian Federation

• OAO Tarkosaleneftegaz oil and Gas Company
• 7 495 972 2384
• Russian Federation

• Oasis Biological Technology (Nantong) CO., LTD
• +86-513-83055099,83116788,013801904752
• China

• OASIS FINE CHEM
• 912667251651
• India

• Oasis Supply & Trade Company
• +1-(405)-605-1930
• United States

• Oasischem International
• +86-551-5178019
• China

• Obetech Pacific (Thailand)
• +662 7227620
• Other Regions