1 entrepreneur
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well testing services
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energy and mineral resources
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mineral resources and natural resources
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natural gas
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electrical equipment and apparatus
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construction work for drinking water production plants
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water treatment chemicals
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drainage and surface work
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construction work for water treatment plants
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engineering and construction consultancy services
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iron (iii) sulphate
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consulting services for infrastructure works
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water purification equipment
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construction inspection services
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basic inorganic and organic chemicals
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pipeline design services
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water supply pipe works
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development consultancy services
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floculants
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oxygen
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system maintenance and support services
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construction work for water treatment plants
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architectural, engineering and planning services
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drilling well construction work
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borehole ducting services
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basic inorganic chemical substances
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technical design services
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iron chloride
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services of professional organisations
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drilling and survey work
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