In the name of Allah.Before starting I found it necessary to thanks Rolf Wissmann who gave me two very good resources.I hope you search around his good sources.For making your work easier I give you his sources as he gave in the past post : " using software like "EChip DOE"
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or "WebDOE"
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" . Now I have serious questions about some substitue of D.O.P . I use PVC emulsion so I have to use D.O.P as its plasticizer. Do you know a good substitute of D.O.P (similar usage) ? Thank you for your time. Thank you for your patient.Thanks Rolf Wissmann and all helpful people around our planet. Best Wishes to all of you.