Remove symbols

Dear,

Does anyone know how the change the following symbols:

– in the shop (productpage) you see and “@” in front of the price, is this possible to change or remove?

– in the shop (productpage) you see and “N” after the price, is this possible to change or remove?

I hope someone can help.

Thanks in advance.

http://ww.wp.xz.cn/plugins/eshop/