The male technician is good however his wife was extremely rude. They are ONLY nice to CHINESE. I was happy with the service first time so I came back yesterday again but very disappointed. I asked for gradation but she did not understand but paying attention to those people who walk by the store. She suddenly walk to outside and grabbed ppl into the store. The owner's wife did not paying attention what I asked for and she said " you did not say that to me" with very rude voice. But i asked for 3 times. I would NOT COME BACK never ever again.