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The quality of all our products meet the national quality standard of China-GB 537-79
The main parameter:
1. sodium biborate(concluding 10 crystal water) ≥95%
2. water-insoluble matter ≤0.04%
3. sodium carbonate ≤0.4%
4. sodium sulfate ≤0.2%
5. chloride ≤0.1%
borax