BS A.U. 145a

British Standard Institution issues standard code BS A.U. 145a which is the safety regulation for reflective license number plate. Our company has acquired this standard for reflective license nubmer plate making since 1983. Over 25 years making the number license plate in Hong Kong, we are full of confidence to serve you next time.
英國標準協會所發出的 BS AU 145a 監管反光牌照號碼牌製作所訂立的國際標準。本公司自1983年以來已獲得製作認證。過去25年來在香港車牌製作累積豐富經驗， 我們樂意為你為您服務。

What is BS A.U. 145a (simple description quote from BSI web page )
"Registration plates (vehicles), Road vehicles, Road vehicle components, Vehicle reflectors, Marking, Yellow, Colour, Chromaticity, Luminous intensity, Optical properties of materials, Photometry (light measurement), Accelerated testing, Weathering, Impact testing, Bend testing, Corrosion tests, Vibration testing, Water-resistance tests, Thermal resistance, Thermal testing, Wear resistance, Wear tests, White, Adhesion tests, Test equipment, Symbols, Retroreflective materials."
什麼是BS A.U. 145a（BSI網頁節錄BSI web page）
“車牌（車輛），道路車輛，道路車輛部件，汽車反光鏡，標誌，黃色，顏色，色度，發光強度，材料的光學性能，光度 (光測量），加速試驗，耐候性，衝擊試驗，彎曲試驗，腐蝕試驗，振動試驗，耐水試驗，熱電阻，熱測試，耐磨損，磨損測試，白色，附著力測試，測試設備，標誌，反光材料“。