Invoice Physicist in Thailand Bangkok –Free Word Template Download with AI
128 Sukhumvit Road, Suite 2104, Tower B
Khlong Toei Nuea, Watthana, Bangkok 10110, Thailand
Tel: +66 (0) 2 255 8890 | Email: [email protected]
VAT Registration No.: 0105559876543
Thai Business License No.: 0105556789012
Bill To
Siam Advanced Materials Corporation Ltd.
Attn: Dr. Ananya Rattanakorn, Chief Technology Officer
45 Rama IX Road, Lumphini, Pathum Wan
Bangkok 10330, Thailand
Tax ID: 0105554321098
Prepared By
Dr. Somchai Prasert, Ph.D.
Lead Physicist & Principal Consultant
Quantum Dynamics Research Group
Bangkok, Thailand
License: Thai Physicist Professional Reg. No. PHY-TH-2019-0034
| # | Description of Physics Services Rendered | Date Performed | Qty | Unit Rate (THB) | Amount (THB) |
|---|---|---|---|---|---|
| 1 | Advanced quantum mechanics consultation for semiconductor lattice structure analysis at the Siam Advanced Materials R&D facility in Bangkok. The physicist conducted a full spectral analysis of silicon-carbide crystal arrays and provided a comprehensive theoretical framework for defect minimization. | 02 Jun 2025 | 3 days | 45,000.00 | 135,000.00 |
| 2 | Thermodynamic modeling and heat transfer simulation for the new photovoltaic cell production line. The physicist developed finite-element thermal models to optimize energy conversion efficiency under tropical Bangkok climate conditions (ambient 32°C, humidity 78%). | 05 Jun 2025 | 5 days | 42,000.00 | 210,000.00 |
| 3 | Electromagnetic field mapping and shielding design for the high-frequency testing laboratory. The physicist performed full-wave electromagnetic simulations and recommended Faraday cage specifications compliant with Thai Ministry of Digital Economy and Society (MDES) radiation standards. | 09 Jun 2025 | 4 days | 48,000.00 | 192,000.00 |
| 4 | Preparation of a peer-reviewed technical white paper on nanoscale phonon transport in graphene-based thermal interface materials, authored by the lead physicist and submitted to the Royal Society of Thailand for publication in the Journal of Applied Physics (Thailand Edition). | 11 Jun 2025 | 1 report | 85,000.00 | 85,000.00 |
| 5 | On-site physics training workshop for a team of twelve (12) Siam Advanced Materials engineers at the Bangkok headquarters. The physicist delivered a two-day intensive course covering applied solid-state physics, band theory, and practical quantum tunneling applications relevant to the company's next-generation transistor roadmap. | 13 Jun 2025 | 2 days | 65,000.00 | 130,000.00 |
| 6 | Travel and accommodation expenses for the physicist's on-site visits to the Siam Advanced Materials facility in Pathum Wan, Bangkok, including intercity transport from the QDR Group laboratory in Khlong Toei and one night's hotel stay at a five-star property in the Bangkok metropolitan area. | 02–13 Jun 2025 | 12 days | 3,500.00 | 42,000.00 |
| Subtotal | 794,000.00 THB |
| VAT (7% — Thai Revenue Department) | 55,580.00 THB |
| Withholding Tax (3% — Section 69 of Thai Revenue Code) | (23,820.00) THB |
| Grand Total Due | 825,760.00 THB |
Payment Instructions & Terms
This invoice is issued in accordance with the Thai Revenue Code and the Service Agreement (Contract No. SAM-QDR-2025-018) executed between Quantum Dynamics Research Group, Bangkok, Thailand, and Siam Advanced Materials Corporation Ltd.
- Bank: Siam Commercial Bank (SCB), Bangkok Central Branch
- Account Name: Quantum Dynamics Research Group Co., Ltd.
- Account No.: 012-3-45678-9
- SWIFT Code: SIBLTHB0XXX
- Currency: Thai Baht (THB)
Payment is due within thirty (30) calendar days from the issue date of this invoice. Late payments shall accrue interest at the rate of 1.5% per month as stipulated under Thai commercial law. Please reference Invoice No. QDR-2025-00472 in all correspondence and remittances. A copy of this invoice must be submitted to the Thai Revenue Department within the prescribed filing period.
Additional Notes
All physics consulting services described in this invoice were performed by Dr. Somchai Prasert, a licensed and registered physicist in Thailand, in full compliance with the Thai Professional Physicists Act B.E. 2562 (2019). The theoretical models, simulation outputs, and technical reports delivered under this engagement remain the intellectual property of Quantum Dynamics Research Group, Bangkok, Thailand, unless otherwise specified in the master service agreement. Siam Advanced Materials Corporation Ltd. is granted a non-exclusive, non-transferable license to use the deliverables solely for internal R&D purposes within the Bangkok metropolitan area and its affiliated facilities in Thailand.
This invoice constitutes a valid tax document under Thai fiscal regulations. Should any discrepancy be identified, please contact the billing department of Quantum Dynamics Research Group within fourteen (14) days of receipt. For questions regarding the physics methodology or technical scope, please direct inquiries to Dr. Prasert at the Bangkok office.
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