If you want to greatly increase your chances of being able to enforce your contract with your Chinese counter-party company, you should do the below. You should do a lot more than this, both within and outside your contract, but I am limiting this post to just those things directly and nearly always necessary for enforcing a Chinese contract and its terms)
Have a written contract.
Have the written contract set out how disputes will be resolved and, more importantly, set forth the right forum for those disputes;
Have Chinese be the official language of your contract if it is going to be enforced in China, which usually (but not always) makes sense;
Have the written contract set out in excruciating detail what the Chinese company must do to comply with the contract;
Set out the damages the Chinese company must pay if it fails to comply with the contract;
Make sure the Chinese company signs and seals your contract.