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Year  Company History
 2000/05 EOC was established. Paid-in capital NTD:42,000,000.
 2000/09 Achieved development of LPF product and setup first manufacturing line for optical communication filters.
 2000/10 Managed cash capital increase by NTD: 118,000,000. Paid-in capital increased to NTD: 160,000,000 after cash capital increase.
 2000/12 Achieved development of 100GHz DWDM product and setup second manufacturing line for optical communication filters.
 2001/03 1. Managed cash capital increase by NTD: 90,000,000. Paid-in capital increased to NTD: 250,000,000 after cash capital increase.
2. Setup third, fourth and fifth manufacturing line for optical communication filters.
 2001/05  Achieved development of CWDM product and mass production for 100GHz DWDM filters.
 2002/02 Setup the first optical coating production line. 
 2003/06 Finished long term reliability test for 100G/200G DWDM filters.
 2004/01 Obtained ISO9001-2000 certification.  
 2007/01  Setup sixth manufacturing line for optical communication filters.
 2007/12 Expanded a second plant area located at Ilan Su-Ao rented from Sesoda Corporation.
 2008/01 Setup the second optical coating production line.
 2008/03  Setup seventh manufacturing line for optical communication filters.
 2008/08 Transferred cash earnings and employee dividend to capital increase by NTD: 20,000,000. Paid-in capital increased to NTD: 270,000,000 after capital increase.
 2009/02 Developed PBS/PBC for Transceiver
 2010/10 Setup eighth manufacturing line for optical communication filters.
 2010/12 Setup ninth manufacturing line for optical communication filters.
 2011/05 Developed Big -AOI CWDM filters for 40Gbps QSFP+
 2011/10 Developed Big -AOI WB-CWDM filters for 4G LTE
 2011/12 Setup the third optical coating production line.
 2012/03 Developed Big -AOI LAN WDM filters for 100Gbps CFP
 2012/12  Developed mini CWDM filters for data center
 2013/06  Developed mini LAN WDM filters for 100Gbps CFP2
 2013/12 Developed CWDM PON filters for 5G
 2014/07  Developed mini Polarization Beam Splitter for IP Cam
 2014/11 Capital reduction and return stock share prices NTD: 70,000,000. Capital reduced to NTD: 200,000,000 after capital reduction.
 2014/12 Developed Near IR BPF for safety telecom/Biotech
 2015/10 Developed C-band 100GHz Low local ripple DWDM for CATV
 2016/04 Employee stock option certificates conversed to new shares NTD:3,215,000. Paid-in capital NTD: 203,215,000.
 2016/06 Employee stock option certificates conversed to new shares NTD: 1,378,000. Paid-in capital NTD: 204,593,000.
 2016/07 Applied post-register for public issued companies approval.
 2016/08 Listed company at Taiwan emerging stock market.
 2016/12 Developed 10G-EPON filters for XG-PON1/NG-PON2
 2017/04 Employee stock option certificates conversed to new stock shares NTD: 2,964,000. Paid- in capital NTD: 207,556,000.
 2017/04 Purchased a new plant area located in Lize industrial park and finished machine transformation. In addition, setup tenth & eleventh manufacturing line for optical communication filters.
 2017/05 Terminated renting contract with Sesoda Corporation for the second plant area.
 2017/08 Transferred cash earnings dividend to capital increase by NTD: 20,755,660.Paid-in capital increased to NTD: 228,312,250 after capital increase.
 2018/03 Employee stock option certificates conversed to new stock shares NTD: 2,223,000.
Paid- in capital NTD: 230,535,250.
 2018/05 Developed 5G DWDM PON filters.
 2018/08 Developed 5G DWDM 100G filters & Band separator filters.
 2019/04 Employee stock option certificates conversed to new stock shares NTD: 2,223,000.
Paid- in capital NTD: 232,758,250.
 2020/07 EOC successfully moved into Taiwanese OTC (Over-the-counter) market.