This hair hoop headband’s style is relatively simple, but it comes in many colors. There is a big knot on it, which makes it look less monotonous. It is suitable for daily life, you can choose the right color according to your dress collocation. Wearing t
It is a bismuth-based eutectic fusible alloy made of four low-melting metals such as bismuth, tin, lead, and indium, without cadmium. It has a low melting point, can be melted in hot water, is easy to recycle and can be reused many times.
The maintenance electrician teaching equipment can meet the needs of students' skill training in the installation, debugging, wiring process, experiment of electrical circuit design and fault analysis of electrical appliances.