home Metal heat treatment Ancillary equipment Company Profile news Contact Us INFORMATION Outline of heat treatment method Improved mechanical properties Overall hardening Surface hardening Surface modification treatment Improved workability and other characteristics Characteristic home Metal heat treatment Ancillary equipment Company Profile news Contact Us Ishii Heat Ren Co., Ltd. 1566-2 Maezu , Chikugo City, Fukuoka Prefecture 833-0002 TEL 0942-51-1371 (Representative) FAX 0942-53-7591