PT. Mitra Kiara Indonesia
Solidifying a Better Future

PT Mitra Kiara Indonesia (“MKI”) was established on November 9, 2018. It has been entrusted to be a business entity under PT Semen Indonesia (Persero) Tbk ("SIG") group that develops cement by-products as part of SIG’s diversification strategy. Grounded in a shared vision and forward-looking business strategy, MKI has been taking steps to realize the company's vision to provide building material solutions, especially cement by-products, and to contribute to Solidifying a Better Future through professionally integrated business activities.

Through a structured and well-planned business strategy, MKI continues to optimize its performance through a business development synergy in the building materials industry with the support of a team of experienced professionals and strategic partners.

The presence of MKI in the building materials industry in Indonesia is further strengthened by the utilization of advanced technology as well as the best and the largest Research & Development Center facility in Indonesia. A commitment to continuous innovation to meet market demands for cement by-products and persistence across all business lines are the foundations of MKI’s efforts to continuously increase the added value and benefits it offers to the society.


To become the leading trusted and reliable building materials provider and to contribute to solidifying a better future through professionally integrated business activities


  • Prioritizing customer satisfaction with a commitment to continuously providing quality and innovative cement by-products.
  • Building competencies through human resource development.
  • Collaborating with strategic partners to develop and innovate cement by-products in line with the characteristics of MKI’s business.
  • Prioritizing the acceleration of each portfolio through structured business planning to generate optimal results for all stakeholders.
  • Establishing a solid foundation to maintain its role as a business entity that benefits the society.


Focus on generating the best results for customer satisfaction with Persistency & Commitment

Focus on generating the best results for customer satisfaction with Persistence & Commitment Maintaining persistence in carrying out its obligations as a corporate entity and commitment to the highest dedication both individually and as a group. This achievement must also be accompanied with ambitious work targets and quality as well as the desire to give the best to achieve the company's vision and mission in any situation.


Utilize the skills of individuals to build
Creativity & Innovation

Having the skills to continuously develop skills to maximize potential and the positive aspects of each individual in the company through idea exploration to build creativity and innovation as part of the achievement of independency. Both are key aspects in the move forward to create new and better things that will ultimately improve the capabilities of all individuals in the company to create a product loved by customers.


Transparent in carrying out all works with a good Attitude & Personality

The attitudes and behavior of all company individuals play an important role in the creation of a positive work culture as a reflection of the psychological construction, mentality, emotion, and character of a company. A positive point of view shared by all individuals in the company will produce optimistic energy and characters, which will naturally embed high-quality values, characters, principles, and cognitive ability in all individuals. Though seem inconsequential, attitude and personality ultimately make all the difference in the creation of a comfortable work environment.


Unite to realize the vision of the company with Professionalism & Ethics

This value is simply described as a behavior, goal, or quality that must be upheld by every individual in the company along with moral values, covering honesty, fairness, equality, dignity, diversity, and respect for individual rights within the company.


Reliable in optimizing the quality of works with high Integrity & Responsibility

This concept covers responsible behavior and actions by all individuals in the company in maintaining professionalism while upholding the principles of morality, strong mental accountability, ethical principles, reliability, trustworthiness, and an honest and strong character.


Encourage individuals to have intense enthusiasm towards Passion & Values

A strong enthusiasm can be the foundation of a business through the courage to keep creating new products. When such passion is complemented by an understanding of shared corporate values however, all elements in the company will work together to create a productive work environment for the achievement of the company's goals.

Corporate Governance

For the improvement of sustainable performance, MKI consistently implements Corporate Governance as the basis of the company’s management in accordance with the principles of Good Corporate Governance (GCG) to be used by the management as the principles and guidelines in the performance of business activities.

The application of GCG principles, namely Transparency, Accountability, Responsibility, Independence, and Fairness is necessary to ensure MKI‘s survival in the face of growing competition. GCG is also a medium for the achievement of the company's goals for the generation of optimal benefits for the society.

Alexandra H. Tamawiwy
Alexandra H. Tamawiwy


Alexandra Hilda Tamawiwy is a graduate of the Faculty of Law, the University of Indonesia. She has worked as in-house legal for national and international private companies in Indonesia. She has more than 20 years of experience in the mortar and other building materials industry, human resources development, and corporate legal. Throughout her career, Alexandra has handled company licensing, legal compliance consulting, acquisition, corporate alliances such as joint ventures, joint operation, and consortium, shareholder agreement, financial transactions, employment contract, and other corporate employment cases. She is also a member of the Indonesian Advocates Association (PERADI).

Mirza Whibowo Soenarto
Mirza Whibowo Soenarto

President Director

Mirza Whibowo Soenarto is the founder of MKI with more than 30 years of professional experience in finance and investment. He also has over 25 years of experience in the cement and related industries. Finishing his formal education with a Master of Arts in International Economics at the University of San Francisco in 1996, Business Administration Ext Program at the University of California, Berkeley, and a Bachelor's Degree in Economics at Trisakti University, Mirza has served in various professional executive positions in several companies outside of MKI.



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