Ningbo Marshal Auto Parts Co., Ltd. The company has a variety of product lines, engineering and technical capabilities and manufacturing capabilities are in constant progress. In terms of engineering skills,30 years develop and reverse engineering experience. Electrode has PASS TUV ,CONFORM TO RoHs & Reach.High strength insulator use a 360°Continuous Laser technology. In manufacturing, it also has a ceramic factory,ceramic Insulators are completely self-produced,high density of insulator, better dielectric strength,thicken design of insulator nose, better mechanical strength which can satisfy modern engine well.Secondly,electrodes have better electrical conductivity, better heat resistance, better heat dissapation, better ablation resistance.Shells have better malleability,better toughness, higher hardness which can reduce shell breaking and help the shell for better heat disappation. 1.Hex Size 14.2 Mm Automotive Spark Plugs Ford M515 Ford spark plugs are the only plugs designed specifically to fit in your Ford or Lincoln cars, trucks and SUVs. Through rigorous testing, these parts meet the strict high-quality standards of Ford Motor Company. 2.Hex size 20.8mm motorcycle spark plugs F7TC Brands: MS-MARSHAL Certificate: IATF:16949 ISO:9001 Terms of payment and delivery: FOB EXW CIF MOQ: 2000 Pcs Price: TBD Packing details: 4 pack /200 Pcs carton Delivery time: 45 days Payment method: TBD 3.Industry spark plugs hex size 22.2mm GXH1-30 Brands: MS-MARSHAL Certificate: IATF:16949 ISO:9001 Terms of payment and delivery: FOB EXW CIF MOQ: 2000 Pcs Price: TBD Packing details: 4 pack /200 Pcs carton Delivery time: 45 days Payment method: TBD Contact information: Address: 228 pengmin Branch Road, Pengqiao village, Henghe Town, Cixi City, Zhejiang Province, China Telephone: +86-574-63834016 Fax: +86-574-63834090 Mailbox: info@ms-marshal.com