The cache is located near 110 Fenliao Road which is close to the W&W Jewelry Museum at 104 Fenliao Road. Look for a utility box on the sidewalk. The cache that you are looking for is a flat magnet.
In the USA many guys fix everything with duct tape. There are even duct tape crafts. I have not seen that in Taiwan. If you know what duct tape looks like the cache will be easier to find.
Nothing but a log sheet so bring your own pen.