A month has passed since the South Korean government started regulating the use of disposable plastic cups.<br /> And it looks like the new rules have helped boost sales of reusable items such as mugs and tumblers.<br />Starbucks Korea says,... it has sold more than twice as many liquid container products as it had during the same period the previous year. <br />Other franchise coffee shops also saw an increase in sales of such products. <br />Pascucci's tumbler sales were up more than 22 percent and A Twosome Place's tumblers sales increased by more than 20 percent in August, compared to July. <br />
