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Name and Specification of Purchasing products： |
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| Hydrogen Fluoride |
| Water≤0.03% |
sulfur dioxide≤0.007% |
fluorosilicate acid≤0.01% |
non-volatile acid（weighted as sulfuric acid）≤ 0.005 % |
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| Potassium Hydroxide |
| Cl-≤0.0018% |
content≥48.0% |
| Trichloroethylene |
| water≤0.02% |
content≥99.4% |
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