Isolation, screening and identification of cellulolytic bacteria from natural reserves in the subtropical region of China and the optimizationof cellulase production by Paenibacullus terrare ME27 - 1 has been reported . For more details consult https:??www.hindawi.com or https://dx.doi.org/10.1155/2014/512497
You may be able to obtain samples from the UK National Culture Collection on http://www.ukncc.co.uk/ they provide freeze dried samples which should be OK for the long transit from the UK to China. Not sure what the import rules will be like though and whether you will need special permission from your local authorities. Good luck with sourcing your cultures!