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STHZ-20 Concrete Core Drilling Machine
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STHZ-15B Multifunctional Concrete Core Drilling Machine
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STHZ-15A Concrete Core Drilling Machine
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STLS-2 New Pavement Moisture Permeameter
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Sand Density Testing Apparatus
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STCTC-2 CPT Vehicle
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STCLD-1 Static Penetration Testing Apparatus
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STK-50 Plate Bearing Testing Apparatus
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STK-30 Plate Bearing Tester
