On September 27, 2007, the male sterile line "Long1A" developed by the company passed the technical appraisal of experts from the Tianjin Science and Technology Commission. This male sterile line belongs to the medium maturing medium japonica variety, with stable sterility, excellent outcrossing habits, strong restorability, and high combining ability. All breeding procedures have been completed, and it can be widely used for the breeding of new hybrid japonica rice combinations. When paired with temperature sensitive japonica rice restoration lines, the selected advantageous combinations can be planted in the southern Liaoning, Beijing, Tianjin, and Hebei rice regions. When paired with light sensitive japonica rice restoration lines, the selected advantageous combinations can be applied in the Huanghuai rice region.