The finish coating was FEP, taking advantage of its excellent anticorrosive and heat - resisting properties.
涂料面层为聚全氟乙丙烯（FEP），利用其优异的耐腐蚀耐热性能；
2
Unlike the fragile solid ceramic, the heatresisting character of coating stainless steel helps the bushes to survive from the extremely temperature shift.