Harmful chemical components:
Total sulfur content ... ... ... ... ... ... ... ... ... ... ... .... not
Total chloride content ... ... ... not
Content of total sulfate ... ... .... not
Total sulfide content ... .... .... not
Gravel 0-4 mm
Gravel 4-8 mm
Gravel 8-16 mm
Gravel 16-32 mm
Gravel 32-50 mm
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