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[{"$nulls":4},"Development, Installation and replacing of the old damaged ducting inside c"]
[null,"1. On site verification of measurements upon appointment of a successful service provider"]
[null,"2. Make a 1.6mm thinckness galvanized ducting and install it."]
[]
[]
[]
[]
[null,"1. Vaccine Basement "," containment ",{"$nulls":7},"3. Effluent plant"]
[]
[null,null,"1.7m"]
[]
[{"$nulls":6},"Wall"]
[{"$nulls":11},"150X150"]
[]
[]
["Filter bank"]
[]
[{"$nulls":11},"1.3m"]
[]
[]
[null,"2. Vaccine clean"]
[]
[{"$nulls":10},"4. Vaccine basement"]
[null,"4.6mm"]
[{"$nulls":10},"Wall"]
["             4mm"]
[]
[{"$nulls":12},"1.6m"]
[]
[]
[{"$nulls":15},"        6mm"]
{"$rows_empty":7}
[null,"5. Basement Effluent"]
[]
[]
[]
["60mm"]
[]
[]
[]
[null,null,"120mm"]