| Company Name | Long Mark Optoelectronics Co., Ltd. |
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| About Us | Not set |
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| Tel | (852) 2891 7523 Click to Contact by Whatsapp Now |
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| Fax | (852) 2834 7890 |
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| Name | Simon Pun |
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| Address | 21/F., Chinaweal Center, 414 Jaffe Road, Wanchai |
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| Hong Kong, , 852, Hong Kong |
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| Products Details | Longmark makes quality LED signs and LED components at competitive price in China. We also make custom design. Contact sales@moving-sign-board. com .. |
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| Web Site | http://www.moving-sign-board.com |
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