Hard-gelatin capsule manufacturers

Buyers must prioritize raw material quality, specifically ensuring the use of pharmaceutical-grade bovine or porcine bone gelatin. Key specifications include moisture content (typically 13%-16%), disintegration time (under 15 minutes), and microbial limits (Total Aerobic Microbial Count <1000 cfu/g). Additionally, verify the locking mechanism design (e.g., dual-ring or dimpled locks) to prevent leakage during high-speed filling.

For global trade, capsules must comply with USP (United States Pharmacopeia), EP (European Pharmacopoeia), or ChP (Chinese Pharmacopoeia) standards. It is critical to ensure the supplier holds GMP (Good Manufacturing Practice) certification and ISO 9001. For specific markets, Halal and Kosher certifications are often essential to meet dietary and religious requirements of end-consumers.

To ensure high productivity, check the dimensional consistency (length, diameter, and wall thickness) with a tolerance of ±0.3mm. High-quality capsules should have a brittleness rate of <1% to avoid breakage on automatic high-speed filling machines. Request a COA (Certificate of Analysis) for every batch to confirm the capsules meet the mechanical strength required for your specific equipment.

Hard-gelatin capsules are sensitive to environmental conditions. They must be stored in a controlled temperature (15°C to 25°C) and relative humidity (35% to 65%) environment. Standard shelf life is 2 to 5 years if kept in original heat-sealed antistatic bags and corrugated cartons. Improper storage leads to softening, brittleness, or sticking, rendering the stock unusable.

Utilize third-party inspection services (such as SGS or Intertek) to conduct pre-shipment inspections focusing on weight uniformity and microbial safety. Always source through reputable platforms like Made-in-China.com, which offers secured payment services and supplier audit reports to verify the factory's actual production capacity.

Focus on Total Cost of Ownership (TCO) rather than just the unit price. Negotiate for volume-based discounts (typically 10-20% for 10+ million units) and request free samples (2,000-5,000 pieces) for trial runs on your filling lines. Ensure the contract specifies compensation terms for defective rates exceeding 0.01%.

Since gelatin is sensitive to heat, use temperature-controlled containers (Reefer containers) for long-distance sea freight, especially when crossing tropical zones. Ensure the packaging includes desiccants and is clearly labeled as 'Keep Dry' and 'Protect from Heat' to prevent deformation during transit.

Always use Letter of Credit (L/C) or Escrow payment methods provided by professional B2B platforms. Avoid direct wire transfers to unknown accounts. Verify that the beneficiary name on the invoice matches the supplier's registered business license to prevent payment fraud.