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Helium (57)CAS RN:71086-78-7;7440-59-7
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DWS SPECIALTY GAS CO., LTDTelephone:+86 559-6511610
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PraxairTelephone:+1-716-879-4077
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Yara International ASATelephone:+47-24-15 70 00
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Air Products and Chemicals, Inc.Telephone:+1 610-481-4911
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Matheson Tri-Gas Inc.Telephone:+1 800-424-9300
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International Gases and Chemicals Ltd.Telephone:+44-0-1782-565556
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Parag Gases & Chemicals Private LimitedTelephone:912026388866
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Scott Specialty GasesTelephone:2157668860
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Air LiquideTelephone:
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SIAD S.p.A.Telephone:+39035.328.326,+39035.328.111