We provide services: 1. General cleaning, chemical cleaning, contract cleaning, regular maintenance contract for home and commercial air-conditions etc. 2. Repaire service include not cold, water leakage, can not turn on, noise, power problem and flashing lights problem etc. 3. Installation service include design pipeline and installation for home and commercial air-conditions etc. Remark: We provide workmanship warranty, if cleaning is not clean, we have free cleaning again, and no any additional fees. If we don't solve the problems, do not charge any fees. Within warranty period, free maintenance for any failures. 2 years warranty for manual installation, can sign 5 years contract, free maintenance for any failures. After-sale service: Please feel free to contact us, we will solve the problem in the shortest time. Complaint feedback: If you are not satisfied with any aspect of our service, please call 9163-5505 for feedback, we will seriously investigate and give you a satisfactory solution.