Mandatory pension insurance contributions to Government-run pension insurance system - standard.
Enterprise annuities - rare. These are essentially commercial pension plans separate from the Government mandated pension system.
Enterprise annuities are still very rare in China, and not many companies offer this to employees. Therefore, they rarely come up as part of transactions and, in general, do not impact timing or purchase price. In contrast, underpayment/non-payment of mandatory pension contributions (as well as other mandatory social insurance contributions, such as medical) is quite a common issue in China and, in cases where the workforce and corresponding underpayment liability is very large, this sometimes will impact purchase price.