seat rings采购内容Dear Sir / Madam We are seeking the supplier for Graphite filled Sintered Metal (commonly termed Gratite as per KTM valve maker) seat insert material. Please confirm if your company is the maker of this material or not? Thanking you in advance. Regards 联系方式Co:SWI Valve Co., Ltd. Tel:82-010-47437495 Fax:82-031-4211834 Email:mgilchrist@swivalve.com Website:http://www.swivalve.com 联系人:Mr.M.G. Gilchrist国家:Korea产品类别机械五金mgilchrist@swivalve.com