cost calculation — 2 Technical Articles

Aug 26, 2025 · Operations

Mastering Payment Channel Cost Billing: Models, Rules, and System Architecture

This article explains the comprehensive design of a payment channel cost billing system, covering business scenarios, various billing models, protocol and rule management, the end‑to‑end calculation process, product architecture, and step‑by‑step guidance for adding new billing scenarios.

billing architecturechannel costcost calculation

0 likes · 10 min read

Mastering Payment Channel Cost Billing: Models, Rules, and System Architecture

Old Zhao – Management Systems Only

Aug 19, 2025 · Operations

How to Accurately Calculate Procurement Costs and Protect Your Profit Margins

This article reveals why many businesses underestimate procurement expenses, breaks down the five hidden cost components, provides step‑by‑step formulas with real‑world examples, and offers practical strategies to optimize purchasing, logistics, loss control, capital use, and system automation for stable margins.

ProcurementProfit marginSupply Chain

0 likes · 10 min read

How to Accurately Calculate Procurement Costs and Protect Your Profit Margins