1, in Bai Mo. Yidege Ink Factory developed and produced it a few years ago, which is more expensive, more than 20 yuan a bottle, 200 ml. This method is direct writing, which is very convenient.
2. It is convenient to write directly with concentrated white sea newspaper color (Li Wen brand, super concentrated) or waterproof poster color (Marley brand, waterproof poster color). .
3. Use alum water (buy alum from the chemical store or the northern vegetable market-I don't know if there is any in the southern vegetable market, that is, alum used for frying fritters, and the ratio of alum to water is 3: 7). The prepared alum water is the same as water, then dip it in this white sail water to write on rice paper, and then dip it in ink (black ink) after drying and brush the back with a brush. In this way, using the ink separation function of the white sail, the place where the white sail water has written is white. This is the most primitive method. Time-consuming, the white effect is not as good as the above two. This method has better effect and excellent whitening effect.