... (NOx,CO); 3.High efficiency 4.Extremely Durable 5.Main market:Asia,Euro,Mideast,Americas BBQ gas grill Burner HD220 : ... hKW/hHD220220170600.90.290.22100002.94 Advantages of HD220 Barbecue Grill:Energy saving: conversion rate≥90% Environmental friendly: CO ... best combustion mode ,which means that gas (natural gas, liquefied petroleum gas) and combustion-supporting gas (air) are mixed according to the ...