Q: How about your after-sale service? Engineers go abroad for installation, teaching and maintenance. Q: How long is the quality guarantee period? Our quality guarantee period is 12 months. We also have other related products. If you need and have any questions...
Q: How about your after-sale service? Engineers go abroad for installation, teaching and maintenance. Q: How long is the quality guarantee period? Our quality guarantee period is 12 months. We also have other related products. If you need and have any qu...