supply of top sub assembly to manufacture low mean pore size conventional primary & secondary & large secondary fuel oil filters to scr drg.no.scr/lofp.sk.no. 55, alt.c and conforming to rdso spec.no.mp.0.2600.25, rev.01,july, 2021. note: all the materials parts must be packed in rigid hard card board carton boxes convenient to handle.top sub assembly to manufacture low mean pore size conventional primary & secondary & large secondary fuel oil filters to scr drg.no.scr/lofp.sk.no. 55, alt.c and conforming to rdso spec.no.mp.0.2600.25, rev.01,july, 2021. note: all the materials parts must be packed in rigid hard card board carton boxes convenient to handle.,top sub assembly to manufacture low mean pore size conventional primary & secondary & large secondary fuel oil filters to scr drg.no.scr/lofp.sk.no. 55, alt.c and conforming to rdso spec.no.mp.0.2600.25, rev.01,july, 2021. not e: all the materials parts must be packed in rigid hard card board carton boxes convenient to handle. [ warranty period : 30 months after the date of delivery ] ]