2. From the perspective of rights protection of vector diagram, it is relatively difficult, and defenders need to prove the originality of the work. If the pirates make little or no changes and claim to be original, it will be difficult for judges to determine which side is original, and designers can make similar or identical documents. It's not difficult, but there's no need to ask for trouble. The cumbersome litigation procedure will consume the company's labor cost and time cost. Infringement is a fact, but there are big and small risks. I suggest that if the company takes action, it is recommended to use genuine picture resources for work. There is no need to take risks in completing the work, and it is reasonable for the company to bear the cost of the pictures. 4. It is recommended to use genuine photo libraries, such as Gai Hua, which should be the best creative photo library in China. Its creativity is better, but its price is higher. If there is cost pressure, you can not accept its price. You can also choose other photo libraries, such as Yi Tu, which is said to be the creative photo library with the largest number of pictures in China. Its price is quite cheap and creative, but it is completely enough for the company app. When choosing a photo library, try to choose a qualified website in China, so that there will be corresponding protection in case of disputes. If you choose a foreign website, it will be difficult to safeguard your rights and interests in case of disputes. It should also be noted that some domestic photo library websites have rights defects, so websites with low prices should also be carefully considered.