There are a lot of companies that are providing bulletproof glass windows, but you have to select the one out of them carefully because it is about your safety and the safety of people around you, they may be your subordinates, your employees or your family members. You need to take care of their safety along with yours so you have to select the bullet resistant glass manufacturers after great research because these glasses are expensive and you cannot buy them every year without any damage. Here are a few qualities you need to see in the manufacturer:
See that the manufacturer will have all the information and knowledge about the work he is doing and the material he is using. When a person knows about different kinds of materials and the composition of different kinds of glass then he will be able to provide the best. There is only a small space for the experiments and only the giants of this industry can do that because it is a very time taking and investment consuming thing so everyone will not do that.
You need to see that he has the latest machinery and is providing good quality glass to the customers. When a factory has the latest machinery then it will be able to provide the best material with the lesser intrusion of human hands in that. When most of the work will be done by the machinery then there will be lesser chances of change and problems in the making or in adding the material for making of glass.
All of the glasses should have the same thickness every time and the manufacturer should emphasis more on the accuracy so that every customer will get the best and equal protection every time they buy from them. When the machinery is used for most of the work then it will have certain rations and it will add the material according to those set ratios and in return you will get equal sized thickness all the time no matter how thick or thin glass you want from them. You need to see that whether they are providing the facility of custom made glass or not. Because many times people will like to have a certain level of thickness and with a certain shape and you need to ask about it.