How to remove scale from thermos cups
1. White vinegar cleaning method Empty the thermos and add an appropriate amount of white vinegar (about one-third of the cup capacity). Shake the cup to ensure that the white vinegar fully contacts the cup wall and bottom. After standing for ten minutes, pour out the white vinegar and rinse thoroughly with clean water. White […]
The birth process of thermos cups
1. The birth of thermos cups In 1643, Italian scientist Torricelli created the pump pressure gauge and later proposed the famous theory of vacuum. This theory was of great significance for the emergence of thermos flasks, but it was not until the late 19th century, after the Industrial Revolution began, that thermos flasks began to […]
