Quality Control

Quality Control

Tianz Chinese Medicine Co., Ltd. applies a structured quality control approach to the sourcing, processing, inspection, packaging, and shipment of Chinese herbal medicines. Our quality procedures are designed to support consistent product identity, cleanliness, appearance, processing condition, and batch traceability. Inspection requirements are established according to the characteristics of each herb, the agreed product specification, and applicable market or customer requirements.

Our quality controls cover a broad range of products, including decoction pieces, medicinal-food homologous herbs, herbal tea ingredients, herbs for powder grinding, medicinal wine ingredients, and materials intended for external application. Because natural materials may vary by origin, season, and harvest conditions, each batch is evaluated against defined acceptance criteria before release.

1. Incoming Material Inspection

Quality control begins with supplier and raw material management. Incoming herbs are checked before they enter processing or approved storage areas. The scope and method of inspection are determined by the material type, intended use, and purchasing specification.

• Identity verification: Materials are reviewed by botanical name, medicinal part, origin information, and characteristic appearance, color, odor, and texture.
• Condition assessment: Inspectors check for visible mold, insect activity, deterioration, excessive breakage, discoloration, and other abnormal conditions.
• Foreign matter control: Raw materials are examined for soil, stones, non-medicinal plant matter, and other unwanted substances.
• Moisture and cleanliness: Moisture condition and general cleanliness are evaluated according to internal inspection standards and product-specific requirements.
• Documentation review: Batch information, supplier records, material descriptions, and available test documentation are checked for consistency.

Where analytical testing is required, relevant items may include moisture, ash, active or marker components, microbial condition, pesticide residues, heavy metals, sulfur dioxide, aflatoxins, or other contaminants. Test items and limits are selected subject to the product specification, destination-market expectations, and intended application.

2. In-Process Quality Control

During cleaning, sorting, cutting, drying, and other processing steps, production personnel follow defined work instructions and record key batch information. Quality checks are performed at appropriate stages to reduce mix-ups, remove unsuitable material, and maintain consistent processing results.

• Cleaning and sorting: Unwanted material, damaged pieces, and visibly nonconforming herbs are removed.
• Processing verification: Processing methods are checked against the approved product requirements, including any specified preparation of decoction pieces.
• Cut size and uniformity: Slices, sections, granules, or whole herbs are assessed for size, thickness, and overall consistency where applicable.
• Drying control: Drying conditions and material condition are monitored to help manage residual moisture and protect product stability.
• Cross-contamination prevention: Material identification, area clearance, equipment cleaning, and batch separation practices are used throughout handling and processing.
• In-process records: Processing and inspection information is maintained to support traceability and review.

3. Finished Product Inspection and Release

Finished products are inspected before approval for packing or shipment. Evaluation criteria vary among roots, rhizomes, bark, flowers, leaves, fruits, seeds, fungi, and other natural medicinal materials. Particular attention is given to attributes that affect commercial suitability and downstream use.

• Product identity and description: The finished material is compared with the approved product name, medicinal part, processing form, and reference characteristics.
• Appearance and sensory characteristics: Color, odor, texture, cut form, uniformity, and visible cleanliness are reviewed.
• Specification conformity: Grade, piece size, moisture condition, allowable foreign matter, and other agreed parameters are checked as applicable.
• Testing review: Required internal or qualified third-party test results are reviewed against the applicable specification before release.
• Batch traceability: Product and processing records are checked so that finished goods can be linked to relevant incoming materials and production information.

Products are released only after the required inspections and document reviews have been completed. Any material that does not meet the specified acceptance criteria is identified, separated, and evaluated before a disposition decision is made.

4. Packaging and Pre-Shipment Check

Packaging is selected according to the herb’s physical characteristics, order quantity, transportation method, and customer requirements. The objective is to help protect products from moisture, contamination, odor transfer, and physical damage during storage and international transportation.

• Packaging material inspection: Inner and outer packaging is checked for cleanliness, integrity, suitability, and conformity with the order.
• Weight and quantity verification: Packed weight, unit count, and carton or bag quantity are reviewed against the confirmed order details.
• Label review: Product name, batch identification, net weight, storage information, and customer-specific markings are checked where applicable.
• Seal and container condition: Closures, liners, bags, cartons, and other packing components are examined for secure sealing and visible damage.
• Pre-shipment verification: Product, packaging, labels, quantities, and shipping documentation are cross-checked before dispatch.

Customized packaging and labeling can be handled according to mutually confirmed specifications, subject to regulatory suitability and technical feasibility. Importers remain responsible for confirming final labeling and market-access requirements in the destination country.

5. Traceability, Feedback, and Continuous Improvement

Tianz Chinese Medicine Co., Ltd. maintains batch-related records to support product identification, quality review, and communication with B2B customers. If a quality concern is reported, the relevant batch information, inspection records, processing details, retained information where available, and shipping documents are reviewed to determine the scope and possible cause.

Nonconformities and customer feedback are handled through a documented review process. Depending on the findings, actions may include material reassessment, supplier communication, process adjustment, specification clarification, additional personnel training, or strengthened inspection controls. Corrective and preventive measures are reviewed for effectiveness and incorporated into future operations when appropriate.

For buyer-specific quality requirements, we encourage customers to provide detailed specifications before order confirmation, including botanical identity, origin preference, processing method, grade, cut size, moisture limits, testing parameters, packaging format, and labeling instructions. Clear specifications enable both parties to establish practical inspection criteria and support consistent supply.