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About Us

PT. Zaini Makmur Sentosa (Zamasta) is an Indonesian-based agricultural and research company founded in 2012. We specialize in producing hybrid corn seeds, rice, crop protection products, and biofertilizers.

Operating from our seed processing plant in Megaluh, Jombang, East Java, we ensure high-quality seed production through rigorous quality checks.

Our vision is to be an integrated agricultural company that contributes to feeding the world while preserving nature and the environment. We continuously invest in agricultural technology to help farmers achieve optimal yields with limited agricultural resources.

Our Values : B E R I N G I N

BERTUMBUH

Never stop learning and growing. Growth is not only about material achievements, but also about improving oneself, broadening horizons, and delivering real impact to those around us.

ELING

Always be aware and self-reflective. Every action carries responsibility—towards oneself, others, and the environment.

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REPUTASI

A good name is an invaluable asset. Reputation is maintained through hard work, honesty, and consistency.

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INTEGRITAS

One’s words align with one’s actions. Honesty becomes a principle, consistency a strength, and from integrity arises trust.

NGAYOMI

Like a banyan tree that provides shade, present to protect, support, and give a sense of security to those around.

GUMREGAH

Full of spirit to rise and move forward. Not trapped in temporary satisfaction, but continuously seeking ways to bring about change and progress.

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INTELIJEN

Using intelligence wisely. Applying data, knowledge, and wisdom in making the right decisions, and creating beneficial solutions.

NGAJENI

Upholding respect and appreciation. Preserving human dignity, valuing every role, and building harmony with others as well as with nature.

Vision :

Driving Indonesian agricultural innovation and sustainability for the prosperity of farmers, customers, and our planet

Mission :

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We think long term

As crops don’t grow and can’t be harvested overnight, we know that our teams have to think long-term. We are aware that it takes more than two decades to build a reputation and just a few minutes to pop it. We bring the best of our people together to provide good and sustainable products.

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We partner mutually and sustainably

Our local farmer partner is always our priority. We keep thinking and advancing to provide them with good and sustainable products. As for our stakeholders, we put mutual consent and interest above all. Therefore, we can thrive together.

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We drive to thrive

Bringing the best and most effective practices to everything we do is our credo. We believe that a good process will eventually deliver good products and services. And this will make us all thrive as one ecosystem.

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We are born progressive learner

We actively listen to our stakeholders and go to see things ourselves in order to have constructive input as necessary to make efficient and effective improvements in every aspect of our business.