long lasting insecticide treated mosquito net material:100% polyester general mesh:156holes/inch2 (we aslo could manufacture the detailed mesh as per our client’s needs) denier: 50d/70d/75d/100d/150d and others shape: rectangular roof net, round roof net, canopy shape net etc. insecticide treated: pretreated with a high quality insecticide deltamethrin or permethrin . treatment: treatment can be effective for 3~5 years. nets can be washed up 21 times while treatment still effective. insecticide dosage with deltamethrin: 15~25/26~35/36~45/46~55 mg/m2 insecticide dosage with permethrin: 250-500mg/m2 available in a variety of sizes and colors totally fit the standard of who. origin: fujian china