The appearance of nm means perfect as new, with almost no wear and scratches. Generally speaking, stamps, paper money, calligraphy works, paintings, books, utensils, ornaments and so on. The appearance can be divided into several grades according to the degree of preservation. The nm appearance is equivalent to 95% new. The better the appearance, the higher the value.
Preservation method of good products:
The ways to maintain a good appearance are to pay attention to moisture and dust prevention, remember not to touch chemicals, wipe them regularly, box them and store them.
It doesn't matter psychologically if it doesn't seriously affect its use efficiency. Sometimes it is more cost-effective to buy nm quality products than brand-new ones. At the same time, it also embodies the concept of recycling old things, low carbon and energy saving.