Rapid rise, updating the year's high, momentarily hitting the limit up. After the market closed on the 28th, it was announced that the Wafer Acceptance Test (WAT) inspection device "WTS-511" would begin sales in February, leading to a limit up on the 29th, with continued investor interest and significant gains. WAT is an electrical inspection performed on completed wafers in semiconductor manufacturing facilities, serving as the final quality assurance process before shipment to ensure compliance with design standards and customer requirements. The WTS-511 inspection device achieves industry-leading throughput due to its high-speed parallel architecture and flexible channel-specific resources.