บริษัทในแขวงหิรัญรูจี เขตธนบุรี

PHOTINANT ENGINEERING CO., LTD.

KONGTHAI LAND AND HOUSE CO., LTD.

A.G.B. TRADING (THAILAND) LTD., PART.

MULTI - PAL (THAILAND) CO., LTD.

PROFESSOR ENGINEERING COMPANY LIMITED

VIFON SUPPLY (THAILAND) LTD.,PART.

EMTRATES EXPORT (THAILAND) CO., LTD.

WATCHARASUM ENGINEERING & INTERSERVICE CO., LTD.

TOMMY THAILAND ENTERPRISE LTD., PART.

CLARE MON (THAILAND) CO., LTD.

NTK ENGINEERING CO., LTD.

A.P.K. ENGINERING & CONSTUCTION COMPANY LIMITED

LT SIAM ENGINERING LTD., PART.

THAI BUFFING AND ENGINEERING LIMITED PARTNERSHIP

THREE DESIGN LIMITED PARTNERSHIP

MAHANAKORN AIR-T.V. ENGINEERING LIMITED PARTNERSHIP

S. K. INTERNET LACE COMPANY LIMITED

S.SUNTHONKARNCHANG CO., LTD.

P.T.N. MANPOWER CO., LTD.

UP-ANN CO.,LTD.