So ask those agricultural orgs what they do. They are already in the business you wish to enter, in the area you wish to sell, and probably have some advice.
Well....I disagree fairly strongly with your statement that handmade products are unhealthy if not made in a "scientific" environment. I'm going to assume the translation of "scientific environment" to mean "a lab setting" since otherwise it has little meaning. I still disagree with you.
I just handmade a sandwich, with bread I made by hand, in my kitchen, and a tomato I grew in my garden, picked by hand, and cut with a knife I washed in an ordinary sink with tap water and handmade soap. I'm pretty sure it's healthy.
I'm a biologist who works in a lab currently, and in a previous career was a pharmacy technician. I can tell you that we handmade many things, as it was a compounding pharmacy - and we often used ordinary household kitchen items in our work, entirely within regulatory standards. They restored health to those who used them.
I posted links to the regulations, but if there are local soap makers, EU regulations require that they have contact information on their labels, so I would suggest contacting people who have successfully navigated the system and ask if they would be willing to guide you.
If you aren't in a hurry to start to sell, you have time to do some reading and calling and emailing locally. That's my best advice, unless we stumble upon someone in Greece who uses this forum and has better information for you.
