Import 32.5 White Portland Cement — Buy in wholesale FOB from Supplier in China

Guangxi Siwei Materials Technology Co., Ltd produces a 32.5 strength class white Portland cement with a brightness rating of Super 90, indicating a whiteness level above 90% reflectance. The cement achieves 24.5 MPa in 3-day compressive strength and 43 MPa at 28 days, with corresponding flexural strengths of 4.5 MPa and 7.5 MPa. Initial setting time is recorded at 180 minutes and final setting at 220 minutes. The product is air-dried for 2-3 hours before packaging and carries a six-month shelf life from manufacture.

The main raw material is calcium silicate, consistent with white Portland cement chemistry where low iron content preserves whiteness. The 45-micron residue is 4.0%, indicating relatively fine grinding that supports early strength development and smooth surface finish. White cements typically limit iron oxide below 0.5% to prevent grey discoloration and may incorporate kaolin or other fluxes. The Super 90 brightness grade suits applications where colour purity is critical, such as pigmented concrete and architectural precast. Standard packaging is 25 kg weatherproof bags, though bulk options should be confirmed with the supplier.

Decorative concrete manufacturers, terrazzo tile producers, and specialist flooring contractors are the principal buyers. The cement's colour consistency makes it suitable for exposed aggregate panels, sculptural concrete, and premium facade elements where grey cement would compromise aesthetics. The 32.5 class provides adequate strength for non-structural and semi-structural decorative work without the heat generation of higher grades. Buyers should confirm with Guangxi Siwei whether the 25 kg bag is the sole format, what palletization is used, and whether sea container loading is offered from Nanning or a coastal port.

Guangxi Siwei Materials Technology Co., Ltd is headquartered at B4-1505, Green Port International Center in Jiangnan District, Nanning City, Guangxi Province, China. The company holds a harbor trust tier with no recorded response rate or average response hours. No information is provided about year of establishment, production plant location, workforce size, annual turnover, or ownership structure. The address suggests an office or trading presence rather than necessarily a manufacturing site, though this should be confirmed directly.

The listing presents detailed product specifications but lacks verified certifications, audit credentials, or client references. Buyers should determine whether Guangxi Siwei operates its own kiln or sources clinker/cement from third-party mills in Guangxi or neighbouring provinces. A site visit or video factory audit is advisable before committing to volume orders, given the absence of third-party verification signals.