Among the alternative fuels existing for spark-ignition engines. ethanol is considered worldwide as an important renewable fuel when mixed with pure gasoline because of its favorable physicochemical properties. An in-depth and updated investigation on the issue of CO and HC engine out emissions related to use of ethanol/gasoline fuels in spark-ignition engines is therefore necessary. ... https://macorners.shop/product-category/heart-puzzle-bracelet-gift-box/