2003.04 Sankyo Seiko (HK) Ltd. registered with HK$ 15 million in HongKong.
2003.06 Factory built up in Dongguan, Guangdong, China, Backlight unit (BLU) department was established
       Total area: 12,000m2
       Workshop area: 10,000m2.
2003.11 Awarded TUV ISO9001:2000 certificate.
2004.10 GWP department was established, started producing optical glass in large quantities : PBS (polarization Beam Splitter), mainly used for LCD television, projector, and large size rear projection TV. The manufacturing capacity represents 300Kpcs/month.
2005.01 Awarded TUV ISO14001:1996 environmental certificate.
2006.10 Passed TUV TS16949 certification.
2007.03 Sankyo Seiko Shijie branch- PengLong Optoelectronics Ltd. established. Planned manufacturing capacity 5kk pcs/month.
2008.10 GWP department was developing extensively, mainly producing screen glass and PBS products. Planning capacity increased to 6KK pcs/month include glass 5KK pcs/month, PMMA 1KK pcs/month.