The stationery you need to prepare for the self-study exam is as follows:

1. Pens and refills: Bring a few black or blue-black gel pens to ensure that you can write clearly on the answer sheet and test paper , smooth.

2. Pencil and eraser: You may need to use a pencil to draw or mark during the exam. Bring a 2B or HB pencil and an eraser to facilitate correction of mistakes.

3. Scratch paper: You may need to do some calculations, draft answers, etc. during the exam, so it is very necessary to bring a few pieces of scratch paper.

4. Correction fluid or correction tape: used to correct wrong words or wrong choices on answer sheets or test papers.

5. Check stationery: Bring rulers, set squares and other stationery to ensure that you can draw accurate lines and angles when making drawings or calculations.

6. Clear transparent ruler: The transparent ruler can be used to mark on charts or drawings to ensure the accuracy of marking.

7. Calculator: If you need to perform complex calculations during the exam, you can bring a calculator. However, it should be noted that different exams may impose restrictions on the type and use of calculators, so it is best to check the exam regulations before taking the exam.

8. Pens and signature pens: Some exams require a signature on the answer sheet to confirm identity, so you can prepare a pen or signature pen.

9. Examination admission ticket: Bring the printed examination admission ticket to ensure the smooth progress of the examination. If the test location is not local, you will also need to bring identification documents and photos.

10. Water bottles and snacks: The exam will take a long time, so bring some water and snacks to replenish energy and moisture during the break.

11. Professional stationery (depending on exam needs): If the exam requires special professional stationery, for example, the drawing exam requires the use of specific specifications of brushes, paints, etc., be sure to prepare and bring them in advance.