Procurement (Purchase)
Demand aggregation, automated RFQs, multi-supplier price comparison and purchase approval flows. Purchase receipts update inventory automatically, so procurement cost is accounted for precisely.
PURCHASE · STOCK · SALES
Purchase-Sales-Inventory Software
An integrated purchase-sales-inventory system for foreign trade — linking procurement, inventory management and sales in real time so goods, stock, cost and profit stay clear and under control.
WHAT IS PSI
What is purchase-sales-inventory software?
Purchase-sales-inventory software brings the three core links of a trading business — procurement (purchase), inventory (stock) and sales — into one system. It connects purchasing receipts, warehouse inventory and sales shipments so the data flows in real time, letting you always know "how much was bought, how much was sold, and how much is left" and avoiding both overstock and stockouts.
For foreign trade enterprises with many order batches, scattered SKUs, tight lead times and multi-currency purchasing and export sales, traditional spreadsheets are error-prone. Wangbang Shangbang purchase-sales-inventory software is designed for export scenarios, connecting PSI with supply chain collaboration to deliver unified, digital inventory & sales management — a core tool for foreign trade businesses to control cost and lift efficiency.
CORE FEATURES
Three core capabilities of PSI
Purchase, sales and inventory connected end to end, with data linked in real time.
Inventory (Stock)
Multi-warehouse management, inbound and outbound records, batch and serial tracking, stock alerts and periodic stocktaking. When stock dips below the safety line it alerts you, ending overstock and stockouts.
Sales
Sales orders, outbound shipping, multi-currency quoting and payment tracking. Sales shipments deduct stock automatically, keeping purchase-sales-inventory data linked and profit transparent.
Why foreign trade businesses choose Wangbang PSI
🌐
Built for foreign trade
7+ years in foreign trade digitalization mean purchase-sales-inventory connects natively with multi-currency, export business and supply chain collaboration — not a generic PSI tool retrofitted for trade.
🔗
Integrated PSI linkage
Purchase receipts and sales shipments update inventory automatically, keeping purchase, sales and stock data in sync — no more reconciling several spreadsheets that never match.
📊
Stock alerts prevent overstock
Real-time multi-warehouse inventory, safety-stock alerts and smart replenishment suggestions keep you from running short on delivery dates or tying up capital in overstock.
🚀
Upgradeable to foreign trade ERP
As your business scales you can move smoothly to the Wangbang BESI foreign trade ERP, adding CRM, import & export documentation and financial reconciliation for business-finance integration.
FAQ
Purchase-sales-inventory software FAQ
What is purchase-sales-inventory software and why do foreign trade businesses need it?
Purchase-sales-inventory software unifies procurement (purchase), inventory and sales in a single system so that purchasing receipts, warehouse stock and sales shipments stay linked in real time. Foreign trade businesses juggle many orders, mixed currencies and tight lead times, so PSI software helps them avoid overstock and stockouts while keeping cost and profit visible. Wangbang Shangbang is exactly this kind of inventory & sales management system built for export trade.
Does Shangbang purchase-sales-inventory software support multi-warehouse and stock alerts?
Yes. Shangbang purchase-sales-inventory software provides multi-warehouse inventory management with inbound and outbound records, batch tracking, stock alerts and periodic stocktaking. When stock falls below the safety threshold, it automatically warns you to replenish so shortages never disrupt delivery dates.
What is the difference between purchase-sales-inventory software and a foreign trade ERP?
Purchase-sales-inventory software focuses on the goods-and-warehouse flow across procurement, inventory management and sales. A foreign trade ERP such as Wangbang BESI adds CRM, import & export documentation, email management and financial reconciliation on top for a full business-and-finance loop. Small and medium exporters can start with Shangbang PSI software and upgrade to the BESI ERP as they scale.
Is the purchase-sales-inventory software on-premise or cloud?
Wangbang offers both. Shangbang purchase-sales-inventory software supports on-premise deployment with full data control, while Shangbangke is a cloud SaaS edition that needs no deployment, works out of the box and is billed by subscription — ideal for small and medium foreign trade businesses starting at low cost.
Want clear, controllable purchase-sales-inventory?
Book a Shangbang purchase-sales-inventory demo and see how procurement, inventory and sales link in real time.