I have to say they time attendance security door inside the company staff service attitude is very good, when buying their products on their service attitude is very satisfactory, but after listening to them that a time attendance security door strong function I immediately decided to buy, when beginning we use the time attendance because the operation reason that security door have a lot of problems, sometimes we do feel shy let their staff to give us a look at the question, but we are not good to deal with their own trouble, but they never work like a service attitude bad things happen.