If suitable anticorrosive substances are adopted such as alkaliproof concrete, steel and PVC cement and effective measures taken, they will prevent the building from alkali corrosion.
Wire wound resistors are made by winding the resistance wire on the alkali less ceramic core, then coated with noncorrosice, heat-proof and humidty proof material.
把电阻线绕在无硷性耐热陶瓷件上，外面加上耐热、耐湿及耐腐蚀之材料保护固定而成。
3
Special control system. The internal structure applies acid-proof and alkali-proof design, so as to prolong the product life.