fire suppression systems and ul 300 standard

any fire suppression system (ansul, pyrochem,kidde, range guard and amerex, and all dry chem kitchen fire systems) mfg before december 1994... DO NOT... meet the ul 300 standard . This standard has been adopted by nfpa 17 and 17a and 96 and states:(systems mfg before dec. 1994 do not meet current codes and will NOT be allowed to be used in kitchens requiring a fire suppression system)In a nut shell, it is unlawful and dangerous to use a pre ul300 system in resturant hoods. Ask for the year of mfg. before you purchase a system that you may find unusable, and lose your money and the time and effort to install AND remove it when the fire marshall says"sorry , it,s not a ul 300 system."......regards.......a licensed system installer with 20 years in the industry.