MClean Technologies Berhad is an investment holding company. The Company, through its subsidiaries, is engaged in the provision of surface finishing of metal parts for electrical and electronic industries, and provision of precision cleaning and cleanroom assembly services, clean bulk packaging services and other related services, among others. The Company's segments include surface treatment and precision cleaning, and technical assembly services. The surface treatment and precision cleaning segment offers surface treatment, precision cleaning, clean bulk pack and related services in the hard disk drive (HDD) and consumer electronics industries. The technical assembly services segment is engaged in the sale of modules relating to technical assembly services. The Company's subsidiaries include Magnetronics Technology Pte Ltd, MClean Technologies Pte Ltd, DWZ Industries Sdn Bhd and DWZ Industries (Johor) Sdn Bhd.