How long will it take to send it to Japan? Is there a courier company in Dalian that sends it to Japan?

It takes 5-7 days to send from Dalian to Japan. There must be a courier company in Dalian to send it to Japan:

Because Dalian is an international express delivery to Japan, it takes time for customs declaration, customs clearance, security inspection and formalities. And after arriving in Japan, it needs to be delivered to the receiving city by express delivery.

If you send express mail from Dalian to Japan, it usually takes 5 days at the earliest, not more than 7 days.

Express services that Dalian can send to Japan include: postal express, SF Express, Shentong Express, Tong Yuan Express, etc., all of which are qualified for international transportation express.