In order to get a visa for less than 3 months, you need to provide:
- his passport
- your salary statement (3 months)
- your employer statement (you can get one at the HR department)
- return air ticket (needed when collecting the visa)
- your garantee statement (you can get one at city hall)
You can travel to other Schengenstaten countries with is visa.
So it means that husband or relatives can not go to Netherlands to have a visit, if they want to see her just ask her come back to China? Is there any other ways to do it?