It depends on what you are looking for. If you are looking to train alongside professional MMA fighters, then you should be looking to train at the Beijing Jiu-jitsu Academy (www.bjjchina.com), also known as China Top Team. They are China's first BJJ and MMA academy, established in 1998, and offer instruction by reputable Brazilian coach Ruy Menezes. They have trained all of China's top MMA competitors including Dai Shuang Hai, Ao Hai Lin, He Peng and Zhang Tie Quan. Instruction and facilities are top notch. They specialize in BJJ and Sanda for MMA competition.
You can also check out Club Hero (http://www.herospirit.com/), which has gyms in Shanghai and Beijing and offer instruction in MMA, BJJ, Muay Thai, Karate and more.
If you are just looking to roll or train to improve your fitness levels, or if you are not focusing on competition, then there are a number of gyms available throughout China.
For more on MMA in China check out RUFF (http://www.ruffchina.com), China's newest MMA organization and blog.
If you are looking for the best MMA gym in Brazil then you should definitely Nova Uniao as it is well known to be one of the premiere MMA gyms in South America.
Mma gym in AC
entram valetudo
go to www.ultimatefitness.pro
Checkout www.martialway.net
You can try American Top Team Kansas City, Body Blox Gym, and Revolution gym.
There is a gracie academy i suggest you look into that
E no caralho mais velho
UMA - Ultimate Martial Arts google it
Hmm....Hartford Wisconsin would have to be Riptide.
Easley South Carolina Where champions are made
Team Endgame, lodi - new jersey