1. frame material: high insulated golden mica 2. long working life 3. ... per client's reqest- Advantage:We use grade A mica with UL, TUV, VDE, CE, CB, SGS approved & good quality heating ... service life, up to 2 times of common products.- Suitable for:Hand dryers, hair dryers, hot air comb and other home ... & power3. drawingYour inquiry is warmly welcomed! heating core mica heating frame for blower