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| add： |
chengnan developing |
| tel： |
0575-88322482 88321669 |
| fax： |
0575-88323469 |
| mobile： |
13357597179 |
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13355753802 |
| mail： |
sxtjgu@163.com |
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spiral duct machine for which industry |
| automatic tube forming machine (commonly known as spiral duct machine) is currently widely used in air conditioning for this product, ventilation pipe industry, construction, filtration, environmental protection, dust, etc. |
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