【IC Weekly Roundup】This week, the U.S. is considering banning the import of new optical modules from China and intends to implement tariffs and restrictions on polysilicon. Meanwhile, Huawei has cautioned that Nvidia is encountering chip performance bottlenecks. ChangXin Memory Technologies has stood firm against Apple's demands for price reductions. Additionally, the semiconductor industry mourns the loss of Huang Chongren, Chairman of Powerchip Semiconductor Manufacturing Corporation (PSMC).