• OSC GmbH Bitterfeld
• +49 3493 73711
• Germany

• OSECO EUROPE BV
• +31.521.522.578
• Netherlands

• Osen Group.,USA(Guangzhou Osen Pesticides Co.,Ltd.)
• 0086-020-36858898 0085-2-27340931
• China

• Osho Pharma Pvt. Ltd.
• 9107925842759
• India

• OSI Group Co., Ltd.
• +86-570-4351770
• China

• OSI Pharmaceuticals, Inc.
• 800-572-1932
• United States

• Osian Marine Chemicals Pvt.Ltd.
• 91-0278-3001833
• India

• Osram Sylvania Inc.
• 1-570-268-5000
• United States

• Osrics Pharmachem Pvt Ltd
• 91-172-2268435
• India

• Osteogenics Biomedical, Inc.
• 806-796-1923
• United States

• Ostrem Chemical Co., Ltd.
• (780) 440-1911
• Canada

• Oswal Chemicals and Fertilizers Limited
• +(91)-(11)-2715242
• India

• Oswal Syndicate
• 0091-423-2230357
• India

• Oswal Udhyog
• +91-22-42473200
• India

• OSWAL UDHYOG/SANCHI CHEMICALS PVT.LTD.
• 0091-22-23400584
• India

• Otava
• +380 44 5222458
• Other Regions

• OTAVA
• 380 44 5222458 416 305 9979 (Canada)
• Canada

• OTC Ltd.
• 7-3272-67-87-87
• South Korea

• Otira Pharmaceuticals .
• 91 (40) 2341 - 5667 / 5668
• India

• OTL Pharma
• 33 (0)1 44 88 59 29
• Australia