Base on client's requirement or our experience, we always suggest to make the mold flow analysis before create molds, and it's very necessary step for complicated new projects. The advantages of mold flow as below:

1). Reduce the risk for develop new product;
2). Optimize the structure of product;
3). Shorten the lead time of new project develop;
4). It's for ensure the sample of first time test shots will be perfect.
5). Energy conservation and reduce consume in industry.

Below is a mold flow we've ever made for reference: