The portable carrier is independently developed by Mr. Shi Jiangang. His invention greatly improves the handling efficiency. The heavy objects that used to be carried by three or four people are now easily handled by one person. At the same time, it reduced the labor cost and obtained the national patent of Duoxiang. He was invited by CCTV to participate in the shooting of [I love invention], and made an exclusive interview on the invention patent and product, which was broadcast on CCTV-10 on August 6, 2019. Once the program was broadcast, it caused a sensation in China and the majority of customers recognized and praised the program.