Throughout the 1 147 day period beginning on October 3, 2021, formosa-optical.com.tw's operability was checked 2 times. It was noted during each inspection as of November 24, 2024, that formosa-optical.com.tw was either down or experiencing operational challenges. No downtime was detected for formosa-optical.com.tw as of November 24, 2024, in any of the inspections. On November 20, 2024, the latest error encountered among 2 responses with errors was coded as 404. 0.990 seconds was formosa-optical.com.tw's recorded response time on November 20, 2024, contrasting the 0.991 seconds average.