
1. Raw Materials Inspection
Origin-sourced botanicals undergo physical, botanical identity, moisture, and initial contamination screenings before approval into inventory.
Xi'an Vexli Bio-Tech Co., Ltd. is a specialized biotechnology enterprise based in Xi'an, Shaanxi Province, China. For over 12 years, we have engaged in the applied research, extraction, purification, and international distribution of premium botanical extracts, natural food colorants, zero-calorie alternative sweeteners, natural food preservatives, and active pharmaceutical/nutraceutical raw ingredients.
Our operations combine 1,250 m² of standardized facility floor space with an audited network of 25 dedicated manufacturing partners. Operating under an on-site verified multispecialty model, we resolve the common challenges faced by international procurement teams: fragmented supplier chains, inconsistent lot-to-lot assays, high minimum order barriers, and complex cross-border documentation.
Every commercial batch produced by Xi'an Vexli Bio-Tech Co., Ltd. is accompanied by a batch-specific Certificate of Analysis (COA) supported by HPLC, GC, and UV testing, ensuring full compliance with European, North American, and global food and dietary supplement regulations.
From verified raw botanical identity to finished export powder, every manufacturing step is strictly controlled under ISO 22000 and HACCP critical control parameters.

Origin-sourced botanicals undergo physical, botanical identity, moisture, and initial contamination screenings before approval into inventory.

Closed-loop aqueous or food-grade ethanol extraction cycles with monitored temperature curves preserve thermolabile botanical bioactives.

Continuous falling film and vacuum evaporation concentrate the liquid extract while protecting active phytonutrients and pigment molecules.

Macroporous adsorption resins and membrane ultrafiltration fractionate marker compounds to guarantee targeted assay purity up to 99%.

Rapid atomization and controlled hot-air evaporation produce uniform, free-flowing powder granules with optimized reconstitution solubility.

Ultra-fine milling reduces particle agglomerates down to buyer-specified particle dimensions tailored for encapsulation or instant blending.

Vibratory grading through 80 to 450 mesh screens followed by strong rare-earth magnetic separation and in-line metal detection.

High-efficiency ribbon and 3D blenders ensure complete batch uniformity for custom proprietary premixes and standardized extract lots.

Cleanroom sealing into food-grade aluminum foil barrier pouches or 25 kg fiber drums with tamper-evident security closures and batch labeling.
Our facility houses commercial-scale stainless steel equipment engineered for industrial sanitary processing and high extraction yields.

Stainless steel multi-function dynamic extraction vessel

Low-temperature concentration reducing thermal degradation

Macroporous chromatography separation battery

Centrifugal atomizing spray drying system for uniform bulk density

Water-cooled mechanical mill for controlled mesh sizing

Rotary vibratory screen classifier for particle consistency

Double-cone and ribbon homogeneous formula blender

Acid/alkali-resistant reaction and crystallization unit

Stable thermal supply system supporting energy efficiency

Static vacuum oven for high-potency delicate active extracts

Solvent recovery and delicate concentration apparatus

Controlled low-pressure secondary dehydration cabinet
7 dedicated QA/QC inspectors execute comprehensive testing protocols across raw materials, in-process stages, and finished batch releases.

Precise quantitative assay determination of active molecules (NMN, Mogroside V, Lutein)

Screening for residual extraction solvents and volatile compounds per USP & EP guidelines

Accurate verification of color absorption values (E-value) and total polysaccharides

Total plate counts, yeast, mold, E. coli, and pathogen identification

Aseptic environment for microbiological plating and sample preparation

Incubation testing for microbial bioburden and stability validation

High-temperature incineration for total ash and acid-insoluble ash content

Loss on drying (LOD) and halogen moisture determination

Solution pH verification for liquid solubility and color-shift testing

0.0001g high-precision scale for reference standard preparation

Thermal stability and constant weight verification oven

Low-temperature vacuum drying analysis for heat-sensitive assays
Led by 4 experienced senior formulation engineers, our R&D department develops over 8 new standardized items annually and supports drawing-based, sample-based, and minor formula customization.

Pilot synthesis and formulation pilot testing benches

Custom flavor masking, solubility matching, and carrier optimization

Bench-scale yield optimization prior to commercial production

In-house validation of testing methods aligned with USP and AOAC standards
Independently inspected by SGS Group to provide global buyers with authenticated transparency and lower procurement friction.
Certificates authenticate that Xi'an Vexli Bio-Tech Co., Ltd. complies with world-class quality, hygiene, and ethical food processing standards.
Certified food safety management system covering colorants, sweeteners, and extracts (Cert. 001FSMS2300414).
Hazard analysis and critical control points ensuring biological and chemical hygiene safety (Cert. 001HACCP2300484).
Organic matcha, medicinal mushroom extracts, spirulina, and allulose certified to USDA NOP requirements.
Compliant with European organic agriculture and processing standards (Cert. CN-BIO-154 & CN-BIO-140).
Verified plant extracts, colorants, and dietary ingredients complying with Islamic dietary law (Cert. SSPY-201318-31928-R2).
Certified pure botanical ingredients compliant with Jewish dietary laws and ethical manufacturing (Cert. NG46A-MRBHY).
Independent multi-residue GC/LC screening for over 500 pesticides ensuring strict EU market access.
Safe transport validation reports ensuring swift non-hazardous customs clearance for air and ocean freight.
Xi'an Vexli Bio-Tech Co., Ltd. serves brand manufacturers, contract packagers, and distributors across more than 30 countries.
FOB, CFR, CIF, EXW, FCA, DDP, Express Air
USD, EUR, GBP, CAD, AUD, JPY, CHF, HKD, CNY
T/T, L/C, D/P, D/A, Credit Card, PayPal, Western Union, Escrow
Shanghai Port, Ningbo Port, Tianjin Port, Qingdao Port
Average 8.0 days dispatch for catalog goods
Starting from 1 kg for most botanical powders