What should I do if a customer dislikes the fact that our company is small? I make circuit boards. Jiangmen Hengyida Electronics Co., Ltd.

This is just like company recruiters, it depends on whether they value academic qualifications or ability. Do you want someone with good academic qualifications and average abilities, or do you want someone with no academic qualifications but super abilities? If you are a professional company, you can show them your previous projects and tell them you did a great job. If their supervisor is a large-scale company, then you have no choice, because once some people's ideas are fixed, it is difficult to change them. Grow slowly. Fortunately, not all customers are like this.