In a high volume cafe, pulling a double every 45 seconds and steaming large volumes of milk is going to tax the heat energy and recovery time for HX boiler systems.

高流量的咖啡，做一个双份要45秒钟和大量冲煮奶的蒸汽是通过HX加热回复系统来达到加热的能量或者回复的时间。

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Halfords has sold double the volume over the last two months compared to the same time last year, while supermarket chain Asda reported a 387% year-on-year surge of all types of car seats.

BBC: Three children in car seats