[2] Ritek also produces solar modules and touch panel products such as passive-matrix OLED and ITO glass.

[7] In November 2005, the company had a market share of 20 percent in rewritable DVDs and CD-RWs and was the biggest disc-manufacturer worldwide.

[11] During that period, he purchased a second-hand electroplating tool from Japan, with the original intention of plating chromium on plastics to enhance durability; this did not work.

As part of the business for First Vintage Record, he took singer Sally Yeh to perform and market albums throughout department stores.

To ensure time to market, Mr. Yeh Ching-Tai recruited a group of engineers from the Industrial Technology Research Institute in 1985 to manufacture compact disks.

The company created the Compact Disk Manufacturers Association (CMA), aiming to protect copyright for CD replication.

The company set up facilities for the production of CDs in the United States, and manufactured the first CD-RW and the first DVD in Taiwan.

The company also set up facilities for the production of CDs in the United Kingdom.In 1998, Ritek manufactured the first DVD-RAM in Taiwan.

PV Next, a thin-film solar manufacturer dedicated to (copper indium gallium selenide), was established in 2009.

[17] In 1999, The company set up with Philips joint venture facilities for the manufacturing of CD-R in Germany (PrimeDisc Technologies in Wiesbaden).