... cost and competieve ... to 2H,and low temperature hardness from 3H to 5H. They have good chemical resistance, water resistance, and ... operation, are easy to process, low-cost , and have good properties. Typical ... Application: variety of abrasion-resistant electric irons, hair crimper and hair straighteners. Specifications and ... 20μ~23μ Abrasion Resistant non-stick coating ...