1, the standard content is different: the main difference between the new national standard and the old national standard is the update and adjustment of the standard content. The new national standard is often a revision or update of the old national standard to adapt to the development of technology and market. The new national standard will add, delete or modify the original regulations to improve product quality, safety or performance requirements.
2. Different technical requirements: There are differences in technical requirements between the new national standard and the old national standard. The new national standard often combines the latest technological progress and industry practice to update and optimize the technical requirements of products. This includes adjusting the requirements for materials, design, manufacturing technology and testing methods to improve the performance, reliability or adaptability of products.