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| June, 2000 |
LONGHORN limited company in Beijing and Shanghai were enrolled. |
| May, 2000 |
LONGHORN technology (Hongkong) limited company was enrolled. |
| January, 1999 |
HC-520 alarm bell was selected by HONDA carmaker in Malaysia. |
| November, 1998 |
HC-626 alarm bell was selected by TOYOTA carmaker. |
| October, 1998 |
LONGHORN was the first company which passed Germany T黇 organization ISO9002 international authentication in security industry. |
| August, 1997 |
Come into existence plastic mould production department,begin to design and produce plastic product . |
| August, 1997 |
R&D department of LONGHORN was come into existence with domestic many famous college support. |
| June, 1995 |
Electret capacitor microphone production dedartment come into existence supported by China electroacoustic graduate school. |
| January, 1995 |
LONGHORN industrial limited company come into existence,begin to produce and sale security products for cars and homes,and decide to be professional security product maker. |
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1995-2000