The Chinese steel producer Baoshan Iron & Steel has decides on a RSB® 300++/4 in 5.0 design for equipping its new combined bar in coil/wire rod mill in Shanghai in China. With this investment in a KOCKS Reducing & Sizing Block, Baosteel can meet its customer's requirements for specialty steel in different dimensions, thus further expanding its business activities. The new RSB® 300++/4 will be located as finishing unit after 14 stands in H/V arrangement in a 600,000 tonne per annum combined SBQ bar in coil and wire rod mill. It will produce bars in coil within a dimension of Ø 18.00 to 50.00 mm and feeders for the wire rod line to finish dimensions of Ø 7.5 to 28.0 mm. The RSB® comes with a remote control for stand and guide adjustments, equipment for the roll-shop and KOCKS proprietary software solutions. Commissioning is scheduled for the end of 2023. With the decision to equip the new rolling mill with a KOCKS Reducing & Sizing Block of the latest generation, Baoshan Iron & Steel is continuing the successful cooperation between the two companies, which began in 2003 with the key investment into a RSB® 370/4 for the combined high-capacity SBQ rolling mill Shanghai No 5”.