The Chinese copy should be just as safe as the original MSR design. Here are other copies from well known retailers in the UK.

http://www.gooutdoors.co.uk/intensity-gas-stove-p158213
http://www.outdoormania.co.uk/Item-13-0-cat-8-brand-654-Gelert_Intensity_Mini_Folding_Gas_Stove.aspx

MSR pocket rocket clones from 2 well known companies in the UK such as Hi-gear and Gelert. They all probably come from the same factory town in China which manufactures the MSR pocket rocket.

I've had no trouble with a Markill Peak Ignition Titanium Stove copy produced by Gelert called the Blaze PZ Micro Stove, which retails for 1/4 the price.

http://www.outdoorworld.co.uk/gelert-blaze-pz-micro-stove-p-3650.html

Is it a Gelert or a Markhill Peak Ignition or a Kovea Elemental

http://www.youtube.com/watch?v=gGSrE8sqfOg

Even the plastic case for the hi end Kovea looks identical to the el cheapo Gelert

Here is a full titanium version copy of the what looks like an Optimus Crux lite stove.

http://www.gooutdoors.co.uk/blaze-titanium-stove-p158215