Although IPC/WHMA-A-620 is an industry standard, it does not cover all designs. However, it provides process standards for general products. If non-universal or special processes are used, a unique acceptance standard can be established. This unique acceptance standard should include customer requirements or promises, and should include acceptable standards for each feature. If possible, new standards or special standards for products should be submitted to the IPC Committee for standard improvement form, so that the IPC Committee can update the version.