• Haining ZHonglian Chemical Co., Ltd.
• 86-573-87622072
• China

• Hairongtai (Tianjin) Chemical CO Ltd
• 86 22 59811019
• China(Hongkong)

• Haiso Technology Co., Ltd (Former Hubei Research Institute of Chemistry)
• +86-27-87408382,87422219 13807119167
• China

• Haiso Technology Co., Ltd.
• +86-27-87408382;87422219
• China

• Haite Chemical Plant
• 0086-432-3903448 3903036
• China

• Haiyan Fine Chemical Industry Co., Ltd.
• +86-573-86611193 86863220
• China

• Haiyan Lihui Chemical Plastic Co., Ltd.
• +86-573-6769788
• China

• Haiyan New Century Petrification Equipment Co.,Ltd
• +86-573-6776735
• China

• HAIYU INTERNATIONAL GROUP
• +86-991-2301960,2301879,2301992,2302568
• China

• HakusuiTech Co., Ltd
• 06-6373-0231　
• Japan

• Halcyon Labs
• 0091-22-24188793
• India

• Halcyon Labs Pvt. Ltd.
• +91 - 79 - 2284 4624, 2284 4370
• India

• Haldia Petrochemicals Ltd.
• India

• Haldin International Inc.
• (201)784-2178
• United States

• Haldor Topsoe
• +45 4527 2000
• Denmark

• Haldor Topsoe A/S
• +45 4527 2000
• Denmark

• Haldor Topsoe América Latina S.A.
• +5411 4756 4931
• Argentina

• Haldor Topsoe Canada Limited
• +1 780 416 9607
• Canada

• Haldor Topsoe India Pvt. Ltd
• +91 11 4060 2000
• India

• Haldor Topsoe International A/S
• +973 17 550485
• Bahrain