How are you? If you want to buy a policy, click on the pop-up dialog box and enter the registration code. Then there is the author's contact email.
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Inventors quantify - small dreamsIf you are a third-party author, you need to contact the author to get the policy registration code, then click on buy policy, enter the registration code to get the policy license. If it's an official policy, you can pay directly to use the policy.