Napnutriscience is a plant micronutrient company specializing in chelated calcium boron seed treatment calcium boron fertilizer trace element calcium boron liquid fertilizer micronutrient products and high-performance fertilizers. Granubor is a granulated form of refined boron, perfect for blending into fertilizer or direct application: with an average particle size of 2.8 mm, granubor is perfect for blending, providing a minimum of segregation in bagging, transport, and application. List of fertilizer companies over 20 in saudi arabia . fertilizer saf sulphur factory. we are inspired by the rhythms of nature? saf sulphur fertilizer factory for agricultural and industrial with license number 2556 issued in riyadh, saudi arabia, started business operation year 2009 after years thorough planning, research development. Truecal™ organic is agriculture solutions' own high-analysis, highly available 10% liquid calcium fertilizer that's packs a powerhouse of calcium in a simple, easy-to use format suitable for all growers – conventional and organic, alike.