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Φ154/Φ172/Φ200/Φ225/Φ280/Φ295/Φ300/Φ305 

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Φ97/Φ108/Φ120/Φ133/Φ140/Φ160/Φ180/Φ245/Φ277

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Φ40/Φ50/Φ60/Φ80/Φ126

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Φ120/Φ133/Φ146/Φ175/Φ200

* various categories

* series development

* plastic and steel alternatively

* simulation design

* high efficiency/low noise

* provide a variety of solutions

* wide application