All you need to do is to hire right ones that has excellent track record and is well equipped with latest printing technology to cater your needs. If you are looking for any special printing services like custom displays and others, they should be able to cater your needs in a best possible way.
Also, when you are looking for such printing service providers, ensure that you hire ones who can give services like print on demand. For emergency banner printing in Melbourne, they should be able to cater your needs at any given time of the day. Take your time and choose the best one.