Profile: Shijiazhuang Puhuasheng Company Ltd. is a manufacturer of steel hardware products. High carbon steel (or Spring Steel) can be hardened substantially and is used for high tensile applications such as springs, brush, Upholstered furniture, duct, and auto parts. Steel wire is a kind of multifunctional wire. High-strength materials make it withstand heavy things like hanging wire without being damaged. There are four types of carbon steel including low (mild) carbon steel, medium-carbon steel, and high carbon steel wire.