Sheng Cheung Electrical Company mainly engage in wire harness assembling. Those products widely use on electrical appliances like home appliances, video/audio equipments, transformers, dedicate digital devices and etc. Besides, Siantar Metal Company mainly produces (screws, screw nuts and metal parts). On the other hand, Kokai, being the Hong Kong agent for Nissei wire, Japan, mainly manufactures Fluorocarbon polymer insulated electric wire and cable, Hiflon tubing,