3J Special Co., Ltd., also known as 3J, is a leading company. It operates a variety of businesses in order to be able to solve problems or meet the needs of customers comprehensively. The main business of the company is the repair and installation of rubber fenders, concrete cutting-drilling services, and all types of concrete repair services. Which has a sincere service for customers and the price is fair. There is a quality team that has been trained and certified in specialized courses such as underwater work, working in high places or working in confined spaces. With expertise, the ability to work in a variety of areas and responsible for work, we have more than 1,000 customers throughout all regions of the country. Including international customers Covering all occupations and agencies such as large industrial factories, seaports, department stores, airports, hospitals, hotels, residences, etc.