1、常用第三方接口支付费率介绍:https://www.ccxcn.com/blog/wap.asp?act=View&id=357
2、微信开放平台支付申请流程:https://jingyan.baidu.com/article/f25ef254bb88b7482c1b8285.html
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5、苹果开发者账号申请流程:https://www.jianshu.com/p/655380201685