Everyone knows that batch production of certain products must have a mold. The plastic frame is a plastic product, it adopts mold to produce, size fixed down, one set mold cost is about $1500 USD, so the size selection aspect will be very limited, of course, quantity reaches a certain level, Mold costs are split on each product alone.
Besides, jewelry box factories rarely produce the plastic frame, therefore not commonly used styles, factories generally do not have inventory, need to plastic frame factory to take certain quantities of the plastic frame, resulting in customers need certain quantities of non-common products.
The third, plastic frame is the heart of glue box whose quality directly affects the quality of glue box. The jewelry box can be placed on consumers for a long time so it is extremely important jewelry packaging products.