If you want authentic rice rolls technology, you have to learn it in Chengdu. The birthplace of rice rolls is Chengdu, and sausage shops can be seen in all the streets. Business is quite good. If you want to learn the technology of rice rolls and open your own shop, I suggest you go to rice rolls to study.

Go to Baidu and search for "technical training of pork intestines powder" to see if there is any information suitable for you. I hope my answer is helpful to you.