Listening Quiz: Lời Khuyên Về Nhuộm Vải Polyamide – Easy Level

1. What temperature does Paul say works well for level dyeing?
2. How long should the fabric be kept in the dye according to Paul?
3. What special chemical does Paul recommend using?
4. What pH range does Paul recommend?
5. What is the conversation mainly about?

Luyện tập thêm về bài học này: