You need to revise that statement, this is not a Miflex product nor do Li Chung have any dealings with Miflex.
Look I'm not a great fan boy of Miflex goodness knows Ive had numerous run in's with those clowns but accuracy is required in any statement, and this is not a Miflex product, in hose or fitting or crimp method.
The 11Q3 marking is simply the date of manufacture 2011 third quarter.
Futher Miflex would not recognise SAE 100R7 as a relivent constuction standard (more's the pity)
While I would also doubt neither is the Li Chung Junk.
If you need to look at blame and responsibility just dig out the DEMA 106 standards commitee reccomendations and the frankly inadequate, ill educated and poorly worded standard those clowns allowed as suitable manufacturing inspection and test procedures for "sports" divers equipment.
I would'nt let them loose designing the colour of a snorkel, let also a regulator standard the result of which your now sadly experiencing.
Further for general information here is the first inept sales pitch from Mifex back in 17th January 2008
and I am still waiting for the answers. This feasco has been going on for years.
Only difference back then I was polite.
Hello from Miflex Hoses
Iain