Is there a company called Yihua Electronic Technology Co., Ltd. in Gaosheng Science Park, Chengnan District, Dongguan?

This company hasn't been there, but Goldman Sachs has. This situation can be divided into two categories. One is that the company has no information on the Internet, which may be newly established or something else. One is a company that may be a liar. Judging from your description, it is estimated to be the former category. You'd better call or go and have a look. I'm not in Goldman Sachs now, otherwise I can help to have a look. Good luck.