Sindh Transmission & Dispatch Company (Pvt.) Limited invites sealed bids from eligible firms for the supply of manpower to carry out operations and maintenance of Extra High Tension (EHT) Transmission Lines within Sindh Province. The contract includes provision of various cadres including managerial, technical, and skilled labor for routine surveys, cleaning, tree pruning, fault rectification, and other related maintenance activities. The contract duration is one year from the signing date, extendable annually up to four years based on performance and mutual consent. Bidders must be registered with relevant tax authorities and comply with all regulatory and safety requirements. The procurement will follow the Sindh Public Procurement Rules 2010 with a bid security of Rs. 800,000 and a bid validity of 90 days.