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| medical urine tester/hydrometer for kidney |
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| concentration meters for ammonia water fertilizer |
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| set of 7 baume hydrometers |
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| milk hydrometer/soya-bean milk hydrometer |
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| antifreeze hydrometer(with temperature) |
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| second grade standard hydrometers for petroleum |
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| first grade seawater hydrometers |
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| set of 6 hydrometer for petroleum with temperature |
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| first grade alcoholometer |
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| hydrometers for petroleum with steel ring |
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| hydrometers for petroleum(SY-Ⅱ)(4) |
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| plastic hydrometer for battery(with thermometer) |
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| liquefacient hydrometer for petrolum |
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| lubricating oil release hydrometer for petrolum |
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| hydrometers for petroleum(API)(4) |
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Product demonstration 
