Pakistani company needs diesel fuel flow meter

Dear Team,
needs two flow meters
01-deisel flow meter for line size 01", for mitsubishi engine 800kw max
consumtion of fluid is 30LTR ~ 300LTR/H
02-FLOW METER required for NG DIRECT LINE 4" for GAS Engine 800kw
required pressure is .2 ~ 0.6/cubic meter /h