JK Holdings Co Ltd manages its group companies which are in the building materials industry. It operates through the following business lines: Wholesale of General Building Materials, Plywood Manufacturing and Wood Processing, and Others. The Wholesale of General Building Materials division sells timber, lumber, plywood, housing equipment, fixtures, and various building materials. The Plywood Manufacturing and Wood Processing division includes lauan made plywood, structural laminated veneer lumber, glued laminated timber, and wood panels. In addition, it deals with franchise, real estate leasing, general building material retail, warehousing and transportation, construction, travel, and insurance agency businesses.