When does Xiaolan Town in Zhongshan City have social security?

There is social security in Xiaolan Town, Zhongshan City 1997. According to the relevant public information, 1997, China began to implement a new system combining social pooling with individual accounts. China's "Labor Law" and "Social Insurance Law" clearly stipulate that it is the legal obligation of the employer to pay social insurance for workers, which is obviously mandatory by the state, and the employer shall not refuse to undertake this legal obligation under any excuse or reason.