Grade 1 violet tungsten oxide is classified according to national standard with grade of WO2.72-1. Certainly, there are different grades of violet tungsten oxide in line with different classification criteria. Moreover, during the actual production process, manufacturers may adopt different raw materials, processing equipment, and processing technology so that they may produce a variety of violet tungsten oxide with different specifications.
In accordance with national standard, the component of grade 1 violet tungsten oxide should satisfy the following requirements:
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