In lean production anything which do not add value are considered waste is true or false

Yes. Lean production system is design to eliminate the Non- Valve Added activity and to improve valve added activities .

The basic idea of lean concept is to sequence the operation or production, in order to improving the productivity by reducing the unnecessary, un reasonable, Non-Valve added activity (NVA) and to promote the valve added (VA) activity

        Valve added activity (VA);           Activity which added some valves to the output/customer service or goods(Eg: Inspection, Testing, Production)
·        Non-Valve added activity (NVA);             Activity provide no value for internal or external customers, and can be immediately eliminated.(Eg; Operator movement, rework , defects )