supply of flame proof tube light 20 watt with equipment protection, lamp housing pressure die casted aluminium alloy with higher thermal conductivity with heat resistant toughened glass, suitable for 230vac 50 hz power supply, with 3 years warranty (sample approval before supply is mandatorily required. material should be certified by cimfr, bis & peso. necessary test certificates to be provided by firm before supply)flame proof tube light 20 watt with equipment protection, lamp housing pressure die casted aluminium alloy with higher thermal conductivity with heat resistant toughened glass, suitable for 230vac 50 hz power supply, with 3 years warranty (sample approval before supply is mandatorily required. material should be certified by cimfr, bis & peso. necessary test certificates to be provided by firm before supply),flame proof tube light 20 watt with equipment protection, lamp housing pressure die cast ed aluminium alloy with higher thermal conductivity with heat resistant toughened glass, suitable for 23 0vac 50 hz power supply, with 3 years warranty (sample approval before supply is mandatorily required. material should be certified by cimfr, bis & peso. necessary test certificates to be provided by firm befor e supply) [ warranty period: 30 months after the date of delivery ] ]