Developing new products continuously to fill or replace the original on the floor. In General, there will be 1-3 items per type of item that has changed.On the development of quite a number of very long and not added.
Development of new products, continued to add or replace the original floor. Typically 1 - 3 per type of product has changed quite a long time to develop and add very little.
Develop new products constantly to add or replace the same on the floor, generally 1-3 items per product category, with the changes in the development of quite a long time. And, more rarely.