"Manufacturer"

Now there are things, and the ratio is related to their quality. In the ratio of 9 to 1, the phase of n-hexane and ethyl acetate is summed up. This is the core method. It is very important in the way of making devices. Harmonizing according to this ratio can make things have specific properties. Following the number of 91, use n-hexane and ethyl acetate as the use, follow this direction, or you can get a good product. When preparing, you need to abide by the method, measure accurately, and make no mistakes, so that the obtained product can be in line with the desired quality and become a usable tool.