... 1. fully automatic production 2. Professional service team heavy load 316 stainless steel compression springFeatures of 316 stainless steel ... steel, alloy spring steel, refractory steel, brass, bronze, etc Load type compressionFinish Zinc-plated, nickel-plated, chrome-plated, silver-plated ... the supplier for many famous companies in many business lines in the world. Our company has been certified by ...