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Founded in 1997，Beijing Youbang Jiantong Surveying Instruments Sales Co.,Ltd. was granted with import and export operation right by the Ministry of Foreign Trade and Economic Cooperation, PRC and G |
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| Product names：Automatic Laser level |
| Model：EL-40 |
Product Introduction：EL40 specification:
1. Wave length:635nm
2. laser safety class......
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| Product names：Automatic Laser level |
| Model：EL-30 |
Product Introduction：Measuing range: Radius 0.5～250m
Operating tem......
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| Product names：Automatic Laser level |
| Model：EL-50 |
Product Introduction：Light source ......
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