About Son Ha Int'l Investment & Development - Limestone Supplier in Viet Nam

Son Ha Int'l Investment & Development is based in Viet Nam and currently lists 26 active products. The catalogue covers mineral and chemical commodities such as limestone, calcium carbonate, kaolin, marble slabs, dolomite, barite and related ores. Products are classified under HS chapters 25 (mineral ores) and 28 (chemical products), with specific codes 2836.50 for calcium carbonate powders and 2507.00 for ceramic grade kaolin. The supplier’s portfolio includes both raw stone forms (e.g., white marble slab stone, chipping stone) and processed powders (e.g., precipitated calcium carbonate, limestone granules). Export listings indicate applications in construction, plastics, feed, paper, glass making and oil drilling. The trust tier is recorded as "harbor", indicating a mid‑level verification status in the sourcing platform.

Product Range and Specialties of Son Ha Int'l Investment & Development

The product list comprises white marble slab stone for paving, various limestone granular grades for poultry and fish feed, limestone powder for water treatment, and limestone powder 80 mesh for feed. Calcium carbonate offerings include ground calcium carbonate for plastic, high‑purity precipitated calcium carbonate (>98.5 %) for HDPE pipe and paper, and a toile‑cleaner grade at 98.5 % purity, all under HS code 2836.50. Kaolin products are presented as ceramic grade kaolin and glaze/body ceramic kaolin, each meeting typical silica (SiO₂ > 48 %) and alumina (Al₂O₃ > 37 %) thresholds and classified under HS code 2507.00. Additional minerals such as dolomite lump for floating glass (HS 2518.20) and barite powder for oil‑field drilling mud are also listed. In the broader industry, limestone for feed is commonly sized 2‑4 mm with calcium carbonate purity above 95 %, while marble slabs for terrazzo are supplied in 2‑3 m panels with surface flatness tolerance of 0.5 mm. Calcium carbonate powders for plastics typically target particle sizes of 5‑30 µm and bulk densities around 1.5 t/m³, and kaolin used in ceramics is graded by plasticity index and fired whiteness (ICUMSA 10‑20).

Trade and Export Information - Son Ha Int'l Investment & Development

Vietnam is a major exporter of construction stones, industrial minerals and chemical powders, with shipments frequently destined for East Asia, the European Union and North America. HS chapter 28 (2836.50) for calcium carbonate powders often requires a Certificate of Analysis, Material Safety Data Sheet (MSDS) and, where applicable, compliance with REACH or EU Cosmetics Regulation for toile‑cleaner grades. Kaolin exports under HS 2507.00 are typically subject to kiln‑drying certificates and ASTM C618 pozzolan standards when used in cement blends. Barite powder for drilling mud is regulated by API specifications (e.g., API 13A) and may need a third‑party assay report. Common packaging includes 20‑ft or 40‑ft containers for marble slabs, and jumbo bags (1‑1.5 t) for powders and granules. Buyers usually request ISO 9001 quality management certification from Vietnamese mineral exporters, although the supplier’s own certification status is not listed in the provided facts. Incoterms such as FOB Ho Chi Minh City or CIF European ports are typical for these commodity shipments.

Sourcing from Son Ha Int'l Investment & Development - Buyer Guidance

When sourcing limestone or calcium carbonate from this supplier, request a recent Certificate of Analysis that confirms particle size distribution, bulk density, and purity (minimum 95 % CaCO₃ for feed grades). For marble slab orders, obtain a mill‑test report detailing dimensions, surface flatness and water absorption (usually <0.5 %). Kaolin buyers should ask for a kiln‑drying certificate and compositional analysis (SiO₂, Al₂O₃, Fe₂O₃ percentages) to verify ceramic grade suitability. Barite powder purchases normally require an API 13A assay report and bulk moisture content below 1 %. Verify that packaging meets your logistics plan - e.g., jumbo bags for powders or crate‑packed slabs - and confirm container loading plans to avoid damage. Ensure that any required import permits reference the correct HS codes (2836.50, 2507.00, 2518.20) and that the supplier can provide the necessary customs documentation such as a commercial invoice and packing list.

What mineral categories does Son Ha Int'l Investment & Development export?

The supplier lists limestone, calcium carbonate, kaolin, marble slabs, dolomite, barite and other ores, covering both raw stone forms and processed powders.

Which HS codes are associated with the calcium carbonate products?

All calcium carbonate powders in the catalogue are classified under HS code 2836.50, which covers calcium carbonate and its derivatives.

Are there specific purity levels for the calcium carbonate powders?

The catalogue specifies high‑purity grades, for example precipitated calcium carbonate for paper at >98.5 % CaCO₃ and a toile‑cleaner grade at 98.5 % CaCO₃.

What specifications are typical for the kaolin products?

Kaolin is presented as ceramic grade with SiO₂ > 48 % and Al₂O₃ > 37 %, matching common ASTM C618 and ISO 1302 requirements for ceramic applications.

How is the white marble slab stone packaged for export?

Marble slabs are usually shipped in wooden crates or steel frames within 20‑ft or 40‑ft containers to protect surface flatness and prevent breakage.

What size ranges are offered for limestone feed grades?

The supplier provides limestone granules in 2‑3 mm and 3‑4 mm sizes, as well as powder grades such as 80 mesh and 75 micron for specific feed or water‑treatment uses.

Which certifications should a buyer request for barite powder?

Buyers typically request an API 13A assay report, a third‑party purity certificate and an MSDS to verify suitability for oil‑field drilling mud.

What documentation is needed for customs clearance of these minerals?

Standard documentation includes a commercial invoice, packing list, Certificate of Origin, and the appropriate HS code declaration (e.g., 2836.50 for calcium carbonate, 2507.00 for kaolin).