Stainless steel hot-rolled black coils are made by hot rolling of slabs, and most of such coils are supplied to re-rollers. Hot-rolled no.1 coils are made of hot-rolled black coils by annealing and pickling； Cold-rolled coils — made from hot-rolled coils by cold rolling, annealing, picking, and quenching and tempering — are thinner, easy to be processed, and have a smooth surface.
Walsin Precision Technology Sdn. Bhd. produces high-precision and super-thin metal materials for electronics, The complete production equipment at Walsin Precision Technology Sdn. Bhd. includes its 20HI precision Sendzimir rolling mill, stress bend leveler, continuous degreasing and annealing line, precision slitting machine, etc. The Malaysia plant can manufacture high quality stainless steel strips as thin as 0.02 to 1.5 mm with widths from 80 to 400 mm. Its annual capacity exceeds 10,000 tons. The products are primarily sold in Southeast Asia, Mainland China, Taiwan, Japan, and Korea, as well as Europe and the United States.