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Silicon TechsSILICON TECHSSilicon Techs Co., Ltd.

Patented orthosilicic acid (H₄SiO₄) fertilizer technology

Stronger crops,healthier soil

An innovative fertilizer manufacturer combining technology with a love of the land. We restore soil so every kilo of fertilizer works harder — and every baht invested pays back.

Importer or distributor? →
  • Orthosilicic acid patent
    Orthosilicic acid patentH₄SiO₄ technology
  • Innovation award
    Innovation awardDept. of Intellectual Property
  • 30+ yearstrusted by Thai farmers
  • ExportedMalaysia, Myanmar, Laos, Indonesia, Sri Lanka and more

Why orthosilicic acid?

The best choice for soil improvement

Our award-winning orthosilicic acid (H₄SiO₄) comes with a full set of secondary nutrients, micronutrients and organic actives in a single bag.

The Law of the Minimum

Plant growth is not set by the nutrient that is most plentiful, but limited by the one that is scarcest — like a barrel that can only hold water up to its shortest stave, however tall the others are.

The hidden short stave is often a secondary or micronutrient — silicon, calcium, magnesium, sulphur, iron, manganese, copper, zinc or boron — the ones most often overlooked, even though they decide the final yield.

Orthosilicic Acid⁺ Gold contains orthosilicic acid plus all 8 secondary and micronutrients in one product, and brings soil pH to the ideal range for crops.

H4SiO4Orthosilicic acid

What is in one bag

  • CaOCalcium
  • MgOMagnesium
  • SSulphur
  • FeIron
  • MnManganese
  • CuCopper
  • ZnZinc
  • BBoron
  • OMOrganic matter
  • Fulvic AcidFulvic acid
  • Humic AcidHumic acid
  • AminoAmino acids
  • Free AminoFree amino acids
  • Glutamic AcidGlutamic acid

Plus 9 groups of beneficial microorganisms

How to use (Always test soil pH first)

pH below 5100 – 200 kg per rai
pH 5 – 750 kg per rai
pH above 725 kg per rai as a supplement

Read more about orthosilicic acid

Field results

Proven in real plots

No need to cut your usual fertilizer — just add a product from our orthosilicic acid range and compare with fertilizer alone.

Durian

Keep your fertilizer, fill up your yield

Standard NPK + Mor Durian vs. standard NPK · 6-year-old Monthong, Chanthaburi, 2026 season

+15%Yield per rai400 → 460 kg/rai
70%Grade A/B fruitup from 62% · avg 139 THB/kg
6%Cracked fruitfewer price-cutting defects
5%Root & stem rothalved from 10%
WithWithout
Canopy: dense, healthy leaves
WithWithout
Tree base: loose soil, active roots

Invest only 616–1,232 THB more per rai for 15–20% more yield

Use 0.25–0.5 kg per tree mixed with your usual NPK

Rice

Turn tired paddies into profitable ones

Usual NPK + Mor Rice vs. NPK only · 111-day demonstration plot

+18%Yield per rai790 vs 670 kg/rai
+22.9%Grain weight6.12 vs 4.98 g per 200 grains
15% → 6%Lodgingpests/disease 12% → 7%
3.9×Net profit1,382 vs 356 THB/rai
Roots: longer and denser
Roots: longer and denser
Leaves: thick, upright, deep green
Leaves: thick, upright, deep green
Grain: 200 grains weighed
Grain: 200 grains weighed

Mix Mor Rice with your usual NPK by soil pH — cut NPK by 20–50% and save 108–269 THB/rai

Test soil pH first, then mix by the chart at the same total rate

Company demonstration plots. Results vary with soil, variety and management.

Don’t wait for your soil to fail before you care for it

Every brand shares one core: orthosilicic acid innovation.

Importers & distributors

Bring Thai orthosilicic acid technology to your market

We supply distributors in Thailand and abroad, including Myanmar, with registered formulas, export packaging and technical support.

  • Patented, differentiated products
  • Bilingual packaging and product registration support
  • Technical training and field demonstrations
  • Flexible volume pricing

Let’s talk

Tell us your crops, market or formula — our team will get back to you.

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