1. Take a small piece of stone plastic clay and knead it into an oval shape, then roll it out evenly like a dumpling skin, with a thickness of about 7 mm..
2. Next, cut into strips and measure the circumference of your fingers.
3. Then connect the two ends, adjust the shape, dry, bend the shape on it, and make a flower pattern as a ring part.
The alarm value of carbon monoxide is divided into high alarm and low alarm. For the detection of industrial carbon monoxide, according to natio