Saudi visa processing materials and procedures: Do you need an invitation letter for a Saudi business visa?

At that time, we were in a hurry to install equipment in Saudi Arabia, and there was no invitation letter. The Saudi company said it couldn't send us a letter, so let's figure it out ourselves. . . . . . Later, I consulted the embassy and said that we needed an invitation letter, and we couldn't get a visa without it, so we started looking for someone who could send the letter. Later, we found a visa for Beijing VIA in oriental ginza, and we were received by Teacher Zhuo. We talked for a long time and said that it would be no problem to send the letter, but we need to pay the invitation fee in advance. Later, everything went according to the process and the visa was successfully approved. There are really few people who send letters in China. I looked around as if they were the only people who could handle sending letters. But the service is really good, and I have met some people who are satisfied with their service. If you haven't done it yet, you can consult them.