Certificate of Endorsment
- 29.07.1980 VWSCO Engineering,Altoona, PA (USA)
- 19.01.1987 National Certified Testing Lab., PA (USA)
- 02.03.1987 National Certified Testing Lab., PA (USA)
- 04.04.1988 S'pore Institute of Standard & Research, SINGAPORE 31.08.1988 Metal Industry Research & Development, PHILIPPINES
- 18.01.1990 United States Testing Co, Inc, Nj (USA)
- 14.06.1991 ZRMK, Lijubijana, SLOVENIA, EUROPE
- 14.07.1991 PIMOT, Warsaw, POLAND, EUROPE
- 17.10.1991 Association of Transport, Communication, Construction, Corrosion Prevention & Environment Protection, HUNGARY
- 29.01.1992 United States Testing Co., Inc., Nj (USA)
- 05.06.1992 Kovelco Research inc., Kobe-shi, JAPAN
- 15.08.1992 Koberuko Science Research Institute Inc., Kobe, JAPAN
- 19.01.1993 Automotive Research Association of India, Pune, INDIA
- 29.03.1993 Victoria Jubilee Institute, Bombay, INDIA
- 14.07.1992 Roads and Traffic Authority of New South Wales, NSW, AUSTRALIA
- 30.10.1995 TUV Brandenburg, GERMANY CE Stamp, BRANDENBURG/U.K.
- 04.10.1996 China National Vehicle Inspection Lab., Beijing, China 01.02.2000 National Testing Of Canada, Quebec, Canada 11.09.2000 University of Thailand Lab., Bangkok Thailand
