. bitumen emulsions are divided into three categories: anionic with negatively charged globules cationic with positively charged globules non-ionic with neutral globules. emulsified bitumen usually consists of bitumen droplets suspended in water. this dispersion under normal circumstances would not...
. bitumen emulsions are divided into three categories: anionic with negatively charged globules cationic with positively charged globules non-ionic with neutral globules. emulsified bitumen usually consists of bitumen droplets suspended in water. this dispersion under normal circumstances would not...
total imports. in a nutshell, net exports represent the amount by which foreign spending on a home country's goods or services exceeds or lags the home country's spending on foreign goods or services. iron, steel: us$ billion (up by % since ) cereals: $ billion (up by %) animal/vegetable fats, oils, waxes...