How to express valuable and fragile items?

We occasionally express expensive and fragile items, such as guitars, but we often pay attention to whether our expensive and fragile items will have accidents on the way. How to effectively protect them is as follows: prepare cartons, paper balls, bubble films, bubble pads, nails and hammers. If it's something as big as a guitar, first box it with a guitar. Then put the guitar into a cardboard box and put a bubble film buffer in the empty position, which can reduce the violent impact from all directions. Then, buy plywood where there is wood, measure the size of each side of the carton, cut the plywood, and fix the guitar and carton together with nails. Write "fragile, handle with care" on the carton. Call the recipient in advance, sign in front of the courier, and let the courier leave after acceptance. If there is any loss or damage, you can claim compensation according to the insured price. Other similar valuables are similar to this one, filled with bubble film, and splints can be nailed outside if necessary. When cutting the splint, it is best to smooth the extra edges to prevent sticking hands.