【Notice of Yongfeng Group Co., Ltd. Supply and Marketing Platform Regarding the Implementation of New National Standards for Hot-rolled Plain Round Steel Bars and Hot-rolled Ribbed Steel Bars】Dear building materials customers: We sincerely appreciate your long-term support for Nanjing Iron and Steel Co., Ltd. The new national standards for steel bars, GB 1499.1-2024 "Steel for the Reinforcement of Concrete - Part 1: Hot Rolled Plain Bars" and GB 1499.2-2024 "Steel for the Reinforcement of Concrete - Part 2: Hot Rolled Ribbed Bars", were issued on June 25, 2024, and will be officially implemented on September 25, 2024, with a transitional period of 3 months...