Dear MIKE AND JOHN, I have read through other pleople's comments and strongly agree with them. I didn't see Mike, but he was so kind on the phone and arrange a service to me urgently. I talked to John face to face and he explained everything to me in details and patiently. Thanks John again for giving me follow-up advice through e-mail during Easter holiday which gives me a clearer picture of the cost of maintaining the house in the future. I think I have got extra services. Yes, Asbestos, tiny trace of pest, potential safety risk in the house. You have digged out all those hidden evidences. Thank you! wei