Why is it free to check the recruitment information in the factory and some are not?

The rule of the factory is to collect points when inquiring about the information of special jobs: for example, (welders, electricians, forklift workers, polishers, porters), the factory information of other general workers can be viewed for free, and 10 times/day can be viewed for free (* * *, more than 30 times, and points will be collected if it exceeds the number of times. For the latest information about the factory, please go to the home page to find a job-factory general worker.