GJB 573A was the earlier edition of the Chinese military standard covering fuze testing, and its interest today is largely historical. It was written at a time when the fuze qualification programme in China was being aligned with the practice used by the major military suppliers, and the numbered methods it contains were adapted from the corresponding United States document rather than developed independently, which is why a reader familiar with the American standard will recognise the structure immediately. The Chinese edition added the administrative apparatus that Chinese military procurement requires, including the conditions under which a method may be waived and the documentation that must accompany a qualification programme. Since it has been replaced by the current edition, a supplier should treat a specification citing this number as a legacy document and establish with the customer whether the acceptance criteria have changed before reusing an existing test report.