1. Do you have after-sales support? Yes, we are pleased to give advice and also have skilled technicians available to maintain the machine if needed. engines worldwide to establish service repair companies. 2.Can you manufacture according to the user's usage Xi and special requirements? OK. We have professional engineers who can communicate directly with customers. Design according to the requirements, and issue drawings within 2-3 days.sPower Factory customize 3. What can you do if the machine is broken? Our machine's warranty period is 12 months. if the broken parts can't repair, we can send the new parts to replace the broken parts, but you need to pay the shipping cost by yourself. if the warranty period is expired, we will negotiation for solving the problems, and we supply the technical support for the whole life of the equipment. 4. Do you have overseas engineers? Yes, we provide overseas engineers, but also support technical training.esPower Factory custome 5. Can one machine only produce one size? It’s depends on the machine parameters.Power Factory customize passenger locomotive manned f6. Can you be responsible for transport? Yes, we will provide the best shipping methods according to your address. we have rich experience in transport.ctory customize passenger locomotive manned vehicle for tunnel 7. You are a trade company or manufacture? We are a Manufacturer.