| 1974 | Established in New Taipei City. |
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| 1977 | OEM several kinds of optical equipment and spare parts of spotting scopes. |
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| 1980 | Developed the first self-design spotting scope. |
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| 1981 | Established the optical production line and manufacture optical products. |
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| 1989 | Launched management information system. |
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| 1990 | Purchased professional optical inspection and test equipment. |
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| 1991 | Self-made all optical components. |
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| 1994 | Launched professional RD team. |
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| 1996 | Obtained ISO9001:2000. |
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| 1997 | Cooperated with academic organization to developed Long Perng own products. |
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| 2001 | Got the first globe multi-national patent. |
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| 2002 | Got more multi-national patents. |
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| 2003 | Annual turnover increased to USD35,000,000. |
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| 2004 | Purchased high quality CNC composite-milling machines. |
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| 2005 | Developed the first telescope. Start to get involved in telescope market. |
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| 2006 | Established Chung-li Facility. Moved the head office from New Taipei City to Chung-li due to quantity increasing and quality elevating. |
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| 2007 | Purchased more high quality CNC composite-milling machines for the mechanical department of New Taipei office. |
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| 2009 | Increased the product line of telescope from 66mm to 100mm. |
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| 2009 | Got the patent for the focuser of telescope. |
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| 2010 | Completed the product line of telescope to 10 types, (60mm to 150mm). |
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