For the detailed testing of sand, stone, soil proportion, etc. in the soil, we may need to entrust a third-party impartial unit "SGS international testing" for soil classification analysis. According to the provisions of SGS:<br>1. If 20kg soil sample is needed for testing, stones and other artificial objects with diameter of more than 5cm shall be excluded<br>2. The waiting time for test results is about 2 weeks<br>3. The proportion of sand, soil and gravel in this area can be measured; CNS 12387 soil classification and application grade evaluation<br>Therefore, we may need to go to the base to collect soil samples in the next step, and we need to wait about 15 days to get the test report.<br>
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