

A: We use a three-layer cold-chain protection system to maintain optimal freshness: Primary Cooling: Microbe-specific, high-polymer cold packs. Insulated Liner: A triple-layer bag made from 600D Oxford cloth, 0.5cm EPE foam, and 16S PEVA biodegradable film. Protective Outer Box: A high-density, shock-absorbent foam cooler. Products are stored frozen before shipment and remain cool throughout transit, ensuring the strains to arrive alive and keep effective.

A: No. We use German high-molecular-weight polymer cold packs with our triple-layer insulation system to maximize cooling duration. While ice packs may melt in extreme heat, our probiotics use an 8-layer microencapsulation technology for heat resistance. We also add an extra 20% viable bacteria at production. This ensures that the loss of live cultures is less than 3% even after 7 days in transit, so the product's effectiveness remains largely unaffected.

A: We support COD, but it's not recommended. Shipping Cost: Standard checkout enjoys free shipping. COD orders require the buyer to cover shipping fees. Service Fee: Couriers charge a 2% handling fee to both the buyer and seller for COD. To reduce your costs, we recommend using our standard online payment methods.