... ' leading compression, extension and torsion spring manufacturers and C-hook suppliers. It also produces high-pressure springs,suspension springs for ... steel, aluminium,ect.2). Finish: black oxide, zinc/nickel/chrome plating, power coating, passivate, oiled to prevent rust, and ... Furun Mechanical Spring Co., Ltd to discuss your C-hook requirements.8).My company promise's:reasonable prices,short ...