Import Best Price Calcium Filler Masterbatch — Buy in wholesale FOB from Supplier in Viet Nam

Calcium filler masterbatch from US Plas Joint Stock Company is a polypropylene-based concentrate incorporating calcium carbonate (CaCO3) at high loading levels, designed for cost reduction and property modification in PP and PE polymer processing. The product designation US275 indicates a specific grade within the supplier's portfolio, with a recommended usage rate of 5-40% depending on application and final product requirements. Pellet dimensions are specified as 3x3 mm with a tolerance of plus or minus 0.3 mm, a critical parameter for consistent feeding in volumetric or gravimetric dosing equipment. The white surface colour suggests a rutile titanium dioxide co-pigmentation or the natural reflectance of ultrafine ground calcium carbonate, though buyers should confirm the exact pigment system for colour-critical applications.

The carrier resin is polypropylene, making this masterbatch compatible with both PP and PE host polymers through standard melt blending, though the dispersion mechanism and interfacial adhesion differ between these matrices. Calcium carbonate fillers in masterbatch form typically employ stearic acid or calcium stearate surface treatment to improve hydrophobicity and dispersion, supplemented by processing aids to reduce torque and die buildup during extrusion. The supplier lists dispersion agent and processing aid additives, which are essential for preventing agglomeration at loadings above 20% and maintaining mechanical properties. Moisture content control is critical for calcium carbonate masterbatches; standard industry practice requires below 0.1% moisture for blown film applications to prevent bubble instability, so the supplier's dry storage recommendation aligns with typical handling protocols.

Application segments for the US275 grade span blown film, injection moulding, extrusion, and yarn/fibre processing, with each application demanding different calcium carbonate particle size distributions and surface treatments. Blown film requires D50 median particle size typically below 3 micrometres to maintain clarity and mechanical strength, while injection moulding tolerates coarser grades up to 5 micrometres for stiffness improvement. Yarn applications for woven sacks and tarpaulins demand excellent dispersion to prevent fibre breakage during drawing. Buyers should request the specific calcium carbonate content percentage, particle size distribution (D50, D90), and melt flow index of the carrier resin to match processing conditions. The supplier offers factory visits, suggesting production transparency that technical buyers may wish to verify.

osoUS Plas Joint Stock Company is headquartered in Hanoi, Viet Nam, with office address at Room 401, Hoa Anh Dao Building in the capital's business district. The supplier holds harbor trust tier status with no response rate or average response time data available, indicating limited platform engagement metrics. The company actively invites factory visits, which suggests production facility ownership or direct operational control rather than trading-only operations, though buyers should verify actual manufacturing location and whether it corresponds to the Hanoi office or a separate provincial factory site.

The supplier markets under the USPLAS brand with product codes including USPLAS 079 alongside the US275 grade, indicating a multi-SKU product line. No information is provided regarding company founding year, production capacity, export certification scope, or specific quality management system accreditation. The reference to QC and QA team supervision is not substantiated with ISO 9001, ISO 22000 or other third-party certification details. Buyers should request evidence of production scale, export experience to target markets, and customer references in similar application segments before committing to volume orders.