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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 5474-2016 |
Plastics—Phenol formaldehyde mouldings—Determination of free ammonia and ammonium compounds—Colorimetric comparison method 塑料 酚醛模塑制品 游离氨和铵化合物的测定 比色法 |
China National Standards compounds—Colorimetric |
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