PCBWay after-sale service review

When I need PCB prototype and PCB assembly service, the first manufacturer jumps to my mind is PCBWay. Because of their good PCB quality and excellent service, you can get quick responses to any questions. Recently I have been planning to participate in maker fairs that held in my city. I plan to show my Arduino project and offer small gifts to the audience who likes my project. I chose the PCBWay ruler as a gift that found in PCBWay open-source community, it seems very good. After seven days I received the PCBWay ruler; here is the picture: