Why was the payment unsuccessful?
Because my website is a personal website, your browser may prompt you that there is a danger in payment, which may cause you to fail to pay, so you cannot download the standard documents you need.
I am an engineer. Here I guarantee that my personal website is absolutely safe. After you pay, you can automatically download the documents you need.
If you find that the document you downloaded is incorrect after you purchase, please send an email to the webmaster in time, and I will reply to you within one working day. Thank you for your understanding.
Please do not contact PayPal directly, because this will incur the cost of intermediate negotiation.
If you encounter any problems during the operation, you can send me the screenshot to my email.
My email is: [email protected]
Attention:
1.Once the documents you need are successfully downloaded from this website, this website will not refund.
2.After your successful payment, you will download a compressed .ZIP file. You need to extract this compressed file first to access a PDF document.
3.This is a personal website, and invoices cannot be provided. If you wish to seek reimbursement through your company, please use relevant screenshots of your payments on this site as proof for your reimbursement.
4.The PDF documents shared on this site are intended for personal learning purposes only.