How it works

InquiryEmail us. Describe the question, the data and the deadline. No data files at this stage.
Scopea short call or email exchange to agree what is in and out, the deliverables, the credit (acknowledgment or authorship) and the price.
Engagement lettera one-page letter in English or Chinese that sets scope, price, deadline and the integrity terms. Nothing starts until you sign it.
Depositusually 50% before work starts; the balance on delivery. Every payment gets an invoice.
Deliveryreport, code, figures, tracked-changes file or session notes, as the letter lists, with a walkthrough so you can explain every method used.