White or off-white crystalline powder, Solubility(25℃,g/100g): ethanol 1; propanediol 48; glycerin 15; water 33; acetone 0.2. Soluble in water. pH value of 1% aqueous solution is 8.
Just push the mouse bubble and it will make a slight sound. After squeezing all the bubbles in front, you can turn them over and get a new silicone bubble board.
The black nylon washer is generally made by adding melanin on the basis of the original pure material. The color is black. It is suitable for the product appearance matching where black is needed.
This water doodle book simply use the pen to color with water. The color appear with every stroke! Then let the page dry to erase the pictures and fill it in again and again.