Manufacturing Production Control & Traceability Architecture

Maruwa is a world-class Japanese precision ceramics manufacturer listed on the Tokyo Stock Exchange (TSE Prime: 5344). In their semiconductor packaging and medical-grade precision component lines, raw powder must undergo exact press molding, thermal sintering, grinding, lapping, and dimensional inspection.

Maruwa required an air-gapped, zero-lag production control system that shop-floor operators could run rapidly wearing cleanroom gloves, with zero toleration for barcode scanning delays.

Techfics designed and implemented a custom Shop-Floor Production Control System (PCS) featuring automated lot serialization, thermal QR label dispatch, and real-time tolerance validation across all five stages of the manufacturing lifecycle.

Core Solution Capabilities:

Cleanroom production lines cannot tolerate cloud latency, external internet dependencies, or heavy browser frameworks that lag under continuous shift use. Techfics implemented an ultra-lean, localized industrial stack:

FastAPI Serialization Endpoint Logic

To ensure multiple operators pressing batches simultaneously never collide or generate duplicate serials, Techfics implemented an atomic database transaction with strict row locking:

@router.post("/api/v1/batches/register")
async def register_batch(batch_in: BatchRegistrationSchema, db: Session = Depends(get_db)):
    # 1. Fetch and atomically increment running sequence with UPDLOCK
    seq = await db.execute_scalar(
        "SELECT NEXT VALUE FOR dbo.Seq_ProductionLotNumber WITH (UPDLOCK)"
    )
    serial_no = f"C{seq:06d}"
    
    # 2. Compute dynamic powder shift code: M-yymmddT-N
    lot_code = generate_dynamic_powder_lot(batch_in.powder_grade, batch_in.shift_id)
    
    # 3. Commit record and dispatch thermal QR traveler payload
    batch_record = await persist_batch_and_specs(db, serial_no, lot_code, batch_in)
    return {"serial": serial_no, "qr_payload": batch_record.qr_data}

The system is fully decoupled from Maruwa's corporate WAN, ensuring that even during plant-wide WAN maintenance or optical fiber outages, factory floor production continues with 100% autonomy and 0 ms network jitter.

Following deployment across Maruwa's production lines, the system delivered immediate, verifiable operational outcomes documented during internal quality reviews: