The Taiwan government's housing crackdown policy has affected real estate and the demand for rebars has decreased, but the demand for factory construction projects has not been affected and continues to increase.

In order to improve earthquake resistance and building safety, factory owners generally use high-standard materials, and the demand for SD490W rebars has grown significantly. However, steel mills mainly produce for orders, and the inventory is mainly SD420W, which often leads to an insufficient supply of SD490W.

In addition, there are not many Taiwanese manufacturers that have passed the SD490W certification, and out-of-stock problems occur from time to time.