Legal analysis: multi-partner business will involve whether the interests of each partner can be guaranteed. The more partners, the more complicated the corresponding things will be. The contract needs a person, and each partner's signature, seal and handprint are indispensable. In order to make the contract more legal, a third party notarization is needed.

Legal basis: People's Republic of China (PRC) Partnership Enterprise Law.

Article 4 A partnership agreement shall be concluded in writing by all partners through consultation according to law.

Article 5 The principles of voluntariness, equality, fairness, honesty and credibility shall be followed in concluding a partnership agreement and establishing a partnership enterprise.

Article 19 The partnership agreement shall come into effect after being signed and sealed by all partners. Partners shall enjoy rights and perform obligations in accordance with the partnership agreement.