Smart SFT is the company for supplying a fastener including a clip and bracket for replacing a welding works at a construction project. The representative of Smart SFT, Deukwon(David) Lee has 30 years experiences at a global company as an engineer and market developer for plant construction. An innovation items (Screw connection system) of Smart SFT has been developed based on Deukwon’s a construction field experiences in order to save time and increase life time of an installed product. A fastener for grating and a electrical and instrument for replacing welding among a launched product at Korea approve from a lot of a major projects and it has been extended to other projects through a user recommendation. Key feedbacks of users for the product of Smart SFT are easy and secured compare to a welding method or a nail fastening by gun. The user of Smart SFT recommends Smart SFT to their friends in order to change their current fastening method, welding which require many work steps and a approval from a supervisor for safety work. Smart SFT would like to provide the products of Smart SFT to the world market based on a positive feedback on a product at Korean market. It helps uses to reduce a construction time and extend a maintenance period. Smart SFT provides an innovated and patented fastener to E&I work and a steel grating fastening work instead of welding and beam clamp. Its principle is a semi-under cutting in pre-drilled hole so it can be a secured fastener to steel compared to an exist products like C or J clamp and an easy and safe fastener compared to welding which has a possibilty of a fire hazard. Because of it many major companies in Korea adapt the convenience and economic efficiency of Smart fastener. It makes you freedom from a concern which are a fire hazard and a safety issue of a walker on a grating due to a grating upside down. David Lee(representative) developed it through the 30years experience of construction site based on Hilti and Halfen products.