l Responsible for the on-site installation guidance of seals, we three persons usually service one day including the training of operation and maintenance personnel. The free service time will be automatically extended until the problem is solved for delay caused or self quality problems.

l A good guarantee for the after-sales technical service, use and maintenance technical consultation of the seals, and ensure that the technical service and maintenance support department will reply to the questions raised (phone or fax) within 2 hours after receiving the customer's telephone (fax) until the problems are solved. If necessary, special personnel will be sent to the customer's location within 48 hours.