ROI Spraying full surface

intercom-Vulong/2025
Cost-Benefit Analysis of Intercom STEP

This analysis compares the STEP system, Manual Spray, and Hand Operation (Solvent Glue + Brush) for handbag production, evaluating their efficiency, costs, and overall economic benefits.

Comparison of Gluing Methods: STEP vs. Manual Spray vs. Hand Operation
Criteria STEP Manual Spray Hand Operation (Brush & Solvent Glue)
Gluing speed (mm/sec) 230 80 35
Gluing time required/day (min) 365 1,050 2,400
Manpower required (TM) 3 6 12
Annual manpower cost (US$) 5,400 10,800 17,280
Total glue consumption/day (kg) 6.34 9.36 46.08
Annual glue cost (US$) 15,206 22,464 34,560
Total annual operating cost (US$) 20,606 33,264 51,840
Cost-Benefit Analysis
1. Faster Gluing Speed & Increased Productivity
  • STEP operates at 230 mm/sec, which is 2.9 times faster than Manual Spray (80 mm/sec) and 6.6 times faster than Hand Operation (35 mm/sec).
  • This significantly reduces daily gluing time, allowing higher productivity and less labor dependency.
2. Lower Labor Requirements & Cost
  • STEP requires only 3 workers, compared to 6 for Manual Spray and 12 for Hand Operation.
  • Annual labor cost for STEP is only 5,400 USD, which is 50% lower than Manual Spray (10,800 USD) and nearly 3 times lower than Hand Operation (17,280 USD).
3. Lower Glue Consumption & Less Waste
  • STEP consumes only 6.34 kg of glue per day, compared to 9.36 kg for Manual Spray and 46.08 kg for Hand Operation.
  • Glue waste is only 10% for STEP, compared to 30% for Manual Spray and 60% for Hand Operation.
4. Lower Annual Glue Cost
  • STEP’s annual glue cost is 15,206 USD, which is 32% lower than Manual Spray (22,464 USD) and 56% lower than Hand Operation (34,560 USD).
5. Lowest Overall Operating Cost
  • STEP’s total annual operating cost is 20,606 USD, which is 38% lower than Manual Spray (33,264 USD) and 60% lower than Hand Operation (51,840 USD).
Investment & Infrastructure Costs
Category STEP Manual Spray Hand Operation
Machines required (units) 1 6 12
Machine cost per unit (US$) 25,000 2,800 15
Total machine cost (US$) 25,000 11,200 180
Depreciation/year (US$) 5,000 1,000 36
Capital opportunity cost (10%) (US$) 2,500 – 18
Power consumption/year (KWh) 2,739 – –
Annual power cost (US$) 247 – –
Annual maintenance cost (3%) (US$) 750 150 5
Floor space used (m²) 12 12 15
Real estate cost (US$) 60,000 – 75,000
Total annual capital cost (US$) 8,497 – 59
Key:
  • STEP requires a higher initial investment (25,000 USD), but has significantly lower operating and maintenance costs.
  • Manual Spray has lower investment costs, but higher labor and glue costs, leading to a total operating cost 1.6 times higher than STEP.
  • Hand Operation requires no large machinery investment but has the highest labor and glue consumption, making its total costs 2.5 times higher than STEP.
Conclusion: STEP is the Most Cost-Efficient Choice
  • Faster production output – 6.6 times faster than Hand Operation.
  • Lowest labor costs – Only 3 workers needed instead of 12.
  • Minimal glue consumption – Saving up to 56% in glue costs.
  • Lowest overall operational expenses, making it the best long-term investment.

🎯 STEP is the ideal choice for companies aiming to reduce costs, improve efficiency, and enhance product quality. 🚀