If the arbitration agreement is invalid, the arbitration clause is invalid: "In the case mentioned in the letter, the parties agree in the contract terms." Therefore, the parties can supplement the agreement, if no supplementary agreement can be reached. Mr. Zheng Q, editor of the research group of this journal, said: "The arbitration agreement has no or unclear agreement on the arbitration matters or the arbitration commission;; If no supplementary agreement can be reached. Article 18 of the Arbitration Law of the People's Republic of China. Whether this clause is valid: the situation reflected in the letter belongs to the arbitration clause that chooses both arbitration and litigation, and the parties can sign a supplementary agreement to determine the jurisdiction of arbitration. Whether this clause is valid or not, Comrade Wang Wenshen, the intermediate people of Chaoyang City, Liaoning Province, should be deemed that the arbitration clause is not clear about the arbitration matters; Any dispute may be submitted to the competent arbitration committee or the arbitration commission“
