Large corporations will have their own process and procedure for purchase orders and if you want to do business with them this will be what you can expect. If you feel that the terms and conditions that big corporations are giving you are not acceptable for your small company then your alternative option is to not sell to big corporations and to focus on smaller companies. Something to keep in mind is that your purchase order terms and conditions may not be perfect yet. Until you have processed hundreds of them you will not know if your terms and conditions actually work. As you fill orders or experience problems filling orders you will want to change your purchase orders to cover this. Working with big corporations can be like drinking from a firehose and they have structure in place for a reason. As they have grown they have developed processes to protect themselves and to make sure they are always in control. Once you are confident that your company has a good process for delivering its product you won't need to be concerned about the ridiculous terms and conditions that big companies give you because it will be irrelevant. You might be frustrated right now because they have not accepted your terms and conditions which are probably based on how you want to do business. Remember "the customer is always right" or at least you should try to remember that and maybe change how you work with big corporations who don't care about your process and only care about their's. Schedule a call if you want to chat about this further. This is a great opportunity that you have uncovered to make your business better and more profitable - you just don't realize it yet.