Border visa-spanish passport

Yes, you can definitely travel to Zhuhai and obtain Zhuhai VOA upon arrival. You can use bus connection over HZMB bridge and obtain a VOA at a bridge or alternatively, you can take a ferry to Jiuzhou and obtain this visa at the ferry port upon arrival. The cost for Spanish citizens is 168 CNY. It is advisable to bring a passport size photo with you and also the mentioned amount in Chinese cash.

Are you based in Hong Kong?

Thanks you. Another question: is there ATM machine?

No, as far as I know, there is no ATM there, but you can exchange some other currency into CNY on the spot, but not at the most favorable rate. You are advised to bring that amount in cash or to use some of the credit cards, precisely Visa or Amex. All others are not accepted. You can easily obtain this amount of Chinese cash at one of many Hong Kong money changers.

Answer to Bastien: No, TCG is not based in Hong Kong.