I do not know about any chinese rubbers, but both Stiga Boost TX and Stiga Calibra Sound are good replacements for the Tenergy... Joola Energy and Joola Express Two is also nice rubbers if you do not want to use/cannot afford to use the Tenergy, but it seems like only the ones from Stiga are about the same duability as the Tenergy rubbers :S
Can't agree more with Anders, Stiga Boost has about the same durability. The only slight difference is that Boost has a lower throw(smaller flight arc) than tenergy (it is not as forgiving as Tenergy). With boost you have to be spot on. I guess you may try the slightly softer Boost TC or TS.
I've heard that some Xiom rubbers are close to tenergy. and they're cheaper
That's why I borrowed Xiom Omega IV Europe and Xiom Vega Pro
Also the Stiga Boost Serie seems to be not bad and Joola Express Serie