Precision steel strip manufacturing.
"Harper Steel Strips specializes in manufacturing high-quality, customized hardened and tempered precision steel strips, ensuring exceptional flatness and tensile strength for diverse industrial applications."
https://www.harpersteelstrips.....com/hardened-tempere

Flapper valve steel, compressor valve steel.
"Harper Steel Strips specializes in high-quality hardened and tempered steel strips for flapper and compressor valves, ensuring exceptional fatigue resistance and durability."
https://www.harpersteelstrips.....com/c85-sk5m-shock-a

Special steel strip, Spring steel strips, 0.1 mm carbon, 0.1 mm shim steel strips.
"Discover Harper Steel Strips precision-engineered special and spring steel strips, including 0.1 mm carbon and shim steel options, tailored for diverse industrial applications."
https://www.harpersteelstrips.....com/about-harper-ste

Heat treated steel strips.
"Harper Steel Strips specializes in customized hardened and tempered high-carbon and stainless steel strips, ensuring exceptional flatness, tensile strength, and fatigue endurance."
https://www.harpersteelstrips.....com/about-harper-ste

0.1 mm C95 / C98 / AISI1095 / SK4 / CS100 / C100 steel strip
"High-quality 0.1 mm C95, C98, AISI 1095, SK4, CS100, and C100 steel strips, ideal for springs, blades, and precision components."
https://www.harpersteelstrips.....com/c80-c62-c55-grad