1. Check whether the coupling screws are tight
2. Regularly check whether the coupling rubber cover is aging and replace it in time
3. Update to the durable new material cover coupling type
پتہ : No.78, Bangtai Road, Qingmeng Zone, Quanzhou, Fujian, China
ٹیلی فون : 86-595-22216883
Whatsapp : 15905996312
ای میل : machine@hongancn.com
