In August 2011, we produced the first batch of chrome-plated piston rods. and then we began to develop the products of chrome-plated piston rod, chrome plated hollow rod, Quenched and tempered rod, high-frequency quenching rod, spring piston rod and light tube. Most of our materials are 45 # steel, 42CrMo, 40Cr, 20MnV6 and stainless steel and so on.
