Where is the company located and what are the main markets?

The company is located in Tianjin, China. Main markets include Southeast Asia and the Middle East.

Factory Price Amino Acid L-Cystine Powder.

Name: Factory Price Amino Acid L-Cystine Powder.
Brand: Tianjin Zhuofeng Biotechnology Co., Ltd.
SKU: 1948932111

Tianjin, ChinaTianjin Zhuofeng Biotechnology Co., Ltd.

US$1.86-1.95

500 kg

Sample price:US$0.00/kg.Request sample

Product profile

Customization

Available

Type

L-Cystine

Chemical Character

Alkalinity

Model NO.

zhuofeng

Appearance

Powder

Product

L-Cystine

Loading

Tianjin

Resource

Natural

Colour

White

Transport Package

25kg/Bag

Specification

99%

Trademark

zhuofeng

Origin

China Mainland

HS Code

2930901000

Production Capacity

5000mt/Month

Key features

High Purity Assay: Assay range 98.5~101.0% with strict impurity controls.

Natural Resource Source: Manufactured via enzymatic conversion from natural resources.

Liver Protection Function: Used for detoxification, poisoning treatment, and liver function protection.

Cosmetic & Food Grade: Used in cosmetics, bread fermentation, and juice preservation.

Flexible Customization: Supports full customization, minor customization, and sample-based design.

Low MOQ Availability: Minimum Order Quantity is 1 unit, suitable for small trials.

Fast Lead Time: Average lead time within 15 workdays for both peak and off seasons.

OEM/ODM Support: Professional OEM and ODM services available with 2 R&D engineers.

Company profile

High Repeat Buyers ChoiceExperienced TeamIn-stock CapacityCustomization from Samples

Tianjin Zhuofeng Biotechnology Co., Ltd.

Tianjin, China

Business Type: Manufacturer/Factory, Trading Company, Other, Group Corporation CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 1 year CertifiedNearest Port: Tianjin PortAverage Response Time: ≤10.17h

AI-Powered supplier vetting

SummaryThe supplier is identified as a professional technical supplier with R&D personnel, broad customization options, ODM services, and OEM experience for well-known brands. It holds ISO 9001, ISO 22000, and GMP certifications and reports quality-control staffing and broad export-market coverage. However, it launched no new products in the past year, lacks 3D software and SDK capabilities, and has no documented service-assessment or corrective/preventive-action procedures. Complaint handling is supported by a clear procedure and records. Evidence is insufficient to confirm financial strength, production performance, or specific customer cases.

Supplier typeThe supplier is explicitly described as a professional technical supplier. Its stated business scope includes food additives, specialized chemicals, machinery, building materials, textiles, graphene materials, software and auxiliary equipment, indicating a diversified product and business profile.

CertificationsThe supplier reports holding ISO 9001, ISO 22000, and GMP certifications. These are explicit certifications relevant to quality, food-safety, and manufacturing management, although the slices do not provide certificate validity or scope details.

After-Sales capabilityThe supplier has a clear customer-complaint handling procedure with followed records, and reported service lead times of within 15 workdays in both peak and off-season. However, it has no written service-capability assessment procedures or corrective/preventive-action records, so the evidence supports complaint handling but not a fully documented service system.

R&D capabilityThe supplier has two R&D engineers and provides ODM services, but it launched no new products in the past year and lacks both 3D software design services and an available SDK. The evidence shows some R&D and design capability, but also clear limitations in recent product innovation and software-related development.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full, minor, and flexible customization, and also provides ODM services. This is direct evidence of broad customization support, despite the lack of 3D software design capability.

Client casesThe supplier states that it provides OEM services for well-known brands, which is evidence of experience serving branded customers. No customer names, product examples, order details, or independently verifiable case records are provided.

Product Q&A

Q:What are the main applications of L-Cystine?

It is used in wound healing, hematopoietic stimulation, liver protection, dermatitis treatment, cosmetics, bread fermentation, and juice preservation to prevent oxidation.

Q:Is customization available for this product?

Yes, we offer full customization, minor customization, flexible customization, and customization from samples or designs. OEM and ODM services are also available.

Q:What is the minimum order quantity (MOQ)?

The Minimum Order Quantity is 1 unit, allowing for small trial orders.

Q:What are the payment terms and shipping methods?

Payment terms include LC, T/T, D/P, PayPal, and Western Union. Shipping is available by sea or by air from Tianjin Port.

Q:How long is the lead time for production?

The average lead time is within 15 workdays for both peak season and off season. We usually prepare goods within 7~10 days.