... %Yield point,110kg/mm2Vickers hardness,HV80Characteristics, Light weight, easy to use, 1.6 m square feet, can be easily moved by ... and parallelism by long-term logen. Rust is not easy, do not use oiled during using time , lightly coated with a thin ... as a instruction, please according to real product.This instruction manual dosen't effect the product performance, safety and customer usage ...