2. Private enterprises refer to profit-making economic organizations established or controlled by natural persons and based on wage labor. Including private limited liability companies, private joint-stock companies, private partnerships and private enterprises registered in accordance with the Company Law, the Partnership Law and the Provisional Regulations on Private Enterprises.
3. There is no essential difference between them.
4. There is a saying that private enterprises generally refer to all private enterprises except state-owned enterprises and foreign-funded enterprises; Private enterprises refer to relatively large-scale private enterprises.