Didirikan pada tahun 1994, Tri-Saudara Sentosa Industri adalah anak perusahaan yang sepenuhnya dimiliki oleh perusahaan Tri-Saudara Sentosa Industri Group, yang juga termasuk Tri-Saudara Sentosa Industri II dan Techno Indonesia. Dengan akarnya dalam cetakan injeksi khusus, Tri-Saudara Sentosa Industri saat ini adalah pemasok terkemuka layanan pembuatan kontrak dan bagian plastik injeksi untuk perusahaan di berbagai industri

Tri-Saudara Sentosa Industri's vision is to be a major player in the electronic and automotive industry. Tri-Saudara Sentosa Industri's mission is to be technologically advance and competitive that provides system, that is enviromentally friendly and comply to all goverment regulation to the electronic and automotive industry Tri-Saudara Sentosa Industri recognizes the importance of the putting the following values into practice. These principles guide our decisions, our actions and ultimately lead to our success : - We ensure a safe work environment. We maintain a physically safe facility, and provide a workplace where employees can freely express their professional opinions, beliefs and ideas. - We uphold a culture of respect and dignity. We take pride in the contributions and diversity of ideas of our team members, and endeavor to understand each other by putting ourselves “in one another’s shoes.” - We inspire empowerment. We encourage problem-solving, communication and employee involvement at every level of the company. We strive to continually learn, adapt and move forward. - We act in stewardship. Employees carefully manage company resources as if they were their own, and respect our customers’ time, financial investments, and the work they entrust to us. - We appreciate the importance of a work-life balance, and we recognize that the best balance between work, family, self, friends, and community is different for each individual. We know that a positive work-life balance drives each individual in attaining achievement and enjoyment in their daily pursuits. Beyond responding to customers' needs to further grow the business, Tri-Saudara Sentosa Indusri also formally measures customer satisfaction on a yearly basis around four criteria: - 98% on time delivery - Production total yield 90% - 0% Reject Customer - 2% Material Waste