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In Petrochemical Industries Company we strive for customer's satisfaction, and continuous improvement.

In turn Petrochemical Industries Company adopted six sigma methodologies as a Best Practice to improve the companies' processes. As a granular urea producing company we have to control the product quality. And for urea product the most important product quality is Biuret content. In turn controlling granular urea product quality was achieved by controlling biuret content in the final product by using six sigma methodologies to optimize urea plant process parameters to come up with the optimum biuret content in the final product. 

The Paper will address the following:

1- The six sigma methodology approach. ·

2- Development and implementation process of urea product improvement.