Want advice of slash proof shirt or jacket

Dear All,

I have a plan going to China in long time next yr and looking for some protecting gear such as a slash proof shirt or jacket. Would anyone give some advise to me for the standard of these products and suggesting some good brands pls?

I searched the following shirt from ebay. Is it really work?Any one has it or similar products pls?

http://www.bladerunner.tv/covert-black-long-sleeved-tshirt-lined-with-woven-aramid-fibre-p-801.html?brid=cju4kse2k92q6575c05v70hmb6