IN PAKISTAN MANY GENERATORS OF CATERPILLAR, JENBACHER AND CUMMINS ARE WORKING. THEY USED 16 SPARK PLUGS PER ENGINE. THESE SPARK PLUGS THEY USED FROM CHAMPION BRAND AND BOASCH BRAND. WE WANT THAT YOU CHECK FROM NGK JAPAN, DENSO JAPAN OR ONY OTHER JAPANEESE SPARK PLUG COMPANIES THAT CAN THEY MADE SAME SPARK PLUGS FOR INDUSTERIAL SERIAL GRADE. EVEN WE ARE INTERSTED IN TORCH BRAND CHINA.IF YOU CAN OFFER US GOOD QUALITY WITH GOOD PRICE WE CAN TRY AND BUY IT FROM YOU FOR PAKISTAN MARKET. I WRITE BELOW BRAND NAME AND SPARK PLUG SERIAL NO. WHICH USED IN GENERATORS CHAMPION BRAND PLUG (MADE IN USA) PLUG NO.RB77WPCC BOSCH BRAND PLUG ( GERMANY) P.NO.7306