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Ammonia (NH3, CAS 7664-41-7) is manufactured directly by Shanghai Wechem Technology Limited to pharmaceutical grade under in-house specifications, offered at purity levels up to 99.99999% with tightly controlled impurities such as oxygen, nitrogen, and moisture. It is shipped as an anhydrous liquefied gas (UN1005) and used as a component in standard and mixed gases for environmental monitoring, various chemical reactions, and semiconductor production. Samples are not offered, and distribution spans North and South America, Western and Eastern Europe, Australasia, Asia, the Middle East, and Africa.
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