Case Study: How Digitalizing B2B Procurement Saves Up to 20% in Operational Costs in the Manufacturing Sector

28 May 2026

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Case Study: How Digitalizing B2B Procurement Saves Up to 20% in Operational Costs in the Manufacturing Sector
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In the midst of today's fierce industrial competition, profit margins are often determined not only by how many products can be sold, but also by how efficiently companies manage their expenditures. One of the areas with the greatest potential for budget leaks—as well as the highest potential for efficiency—is B2B procurement of goods and services.

Traditional procurement processes that rely on physical documents, untracked phone negotiations, and slow multi-level approvals often burden a company's cash flow.

To understand the real impact of procurement system transformation, the team at idindustri.com highlighted a case study from a medium-sized manufacturing company in the West Java industrial area (let's call it PT Gemilang Manufaktur Nusantara) that successfully carried out a total overhaul of their supply chain system.


Background and Challenges

PT Gemilang Manufaktur Nusantara (GMN) is an automotive component manufacturer that supplies various national-scale assembly plants. With over 500 employees and three production facilities, PT GMN faced a logistics and procurement nightmare every month.

Before 2025, their procurement team faced three main challenges:

  1. Uncontrolled Decentralization (Maverick Spend): Each plant manager often independently purchased supporting raw materials and machine spare parts from local vendors without uniform price standards.

  2. Time-Consuming Manual Processes: The creation of Purchase Orders (PO), multi-level approvals, and invoice matching took an average of 14 to 21 working days.

  3. Lack of Vendor Transparency: There was no supplier performance evaluation system (vendor rating), so the company often got stuck with suppliers who frequently delivered late but were still used out of habit.

As a result, procurement costs swelled, and raw material delays often disrupted production schedules.


Solution: Centralization and Digitalization of Procurement (E-Procurement)

Realizing that this issue was eroding profitability, PT GMN's top management decided to overhaul their B2B procurement strategy through two main pillars:

1. Vendor Consolidation and Centralization The company audited over 150 of their active vendors. The procurement team selected and narrowed down the number of vendors to 45 strategic partners capable of providing Volume Discounts by consolidating the needs of all three production facilities.

2. Implementation of a Cloud-Based E-Procurement System PT GMN moved away from paper and manual emails, switching to an integrated E-Procurement platform. This new system enabled:

  • Electronic Catalog (E-Catalogue): Plant staff could only order items from approved vendors at locked (contracted) prices.

  • Automated Approval Workflow: PO approvals, which previously took weeks, were now processed within hours digitally, even via managers' mobile devices.

  • Real-time Audit Trail: Every transaction, price change, and order history was transparently recorded within the system.


Results and Impact (ROI)

Within 6 months of implementation, PT GMN recorded fundamental changes in their operational efficiency:

  • 20% Reduction in Procurement Costs: Consolidating purchase volume to fewer vendors resulted in much stronger bargaining power, significantly reducing the purchase price of supporting materials.

  • Up to 70% Cut in Order Cycle: The processing time from request (Purchase Requisition) to PO issuance drastically decreased from an average of 18 days to just 3-5 working days.

  • Nearly 100% Compliance: The problem of maverick spend or off-plan purchases almost completely disappeared as the system automatically blocked unauthorized transactions.

  • Increased Team Productivity: The procurement team was no longer busy managing piles of administrative paperwork, but instead focused on strategic negotiations and sourcing more innovative material alternatives.


Conclusion & Insights for Industry Players

The case of PT GMN proves that B2B procurement efficiency is not just about "asking suppliers for discounts", but about improving systems and changing purchasing behavior.

For you, industry professionals and supply chain managers, there are three practical steps (actionable takeaways) you can start immediately:

  1. Audit Your Spending Now: Identify which areas have leaks or unreasonable price variations for the same item.

  2. Reduce the Number of Vendors, Improve Partnership Quality: Having too many vendors does not mean security; it actually complicates control. Build long-term strategic partnerships.

  3. Start Investing in Technology: You don't have to immediately use a giant ERP system. Start with a simple e-procurement module that focuses on transparency and accelerated approvals.