The UL sticker on the outlet itself shows E231858 which comes back as:
KCXS.E231858
Ground-fault Circuit Interrupters
GENERAL PROTECHT GROUP INC E231858
555 DAXING RD W
LIUSHI
YUEQING, ZHEJIANG 325600 CHINA
That listing looks like it is only for a GFCI (UL 943), and does not address the UL 498 that the package claims. My guess is that this listing is for a different GFCI made by that company, and they used the same label for this one.
