Quote from gamec on May 4, 2016, 02:30
Hi, was wondering why this has been sent back due to "As Guangzhou courier service companies, security checks returned"

There was nothing in it that would infringe on the new policy.

All that I ordered was 8 copper heatsinks for PC Memory and Copper Leaf sheets in art supplies.

Nothing electrical, liquid etc?

1. Maybe the parcel trigger the security check (only X Ray) thinking it's something forbidden in it.

2 You should contact seller as soon as possible to let him know of the situation and maybe he could call China Post: 86 20 11185.

Hope this help.