4A Biotech
4A Biotech (Suzhou 4A Biotech Biotechnology Co., Ltd.) is a privately held Chinese supplier of immunology research reagents — including 1,277+ flow cytometry antibodies, 400+ ELISA kits, apoptosis and cell cycle kits, and IVD raw materials — sold to academic, IVD-manufacturing, and pharma research customers in China, with supporting fee-for-service experimental offerings.
- Company typePrivate
- Founded2009
- HeadquartersBeijing, China
- Headcount51–100
- GTM typeB2B
- OfferingHardware or Manufacturing
What 4A Biotech does
4A Biotech (Suzhou 4A Biotech Biotechnology Co., Ltd. / 四正柏生物) is a privately held Chinese biotechnology company that has spent more than a decade building a catalog of immunology-focused research reagents, assay kits, and IVD raw materials, and selling them primarily to academic research institutions, IVD diagnostic manufacturers, and pharmaceutical/biotech laboratories in China. Its core technology platforms are flow cytometry (a catalog of 1,277+ conjugated and unconjugated antibodies covering CD markers and other targets across human, mouse, rat, and chicken), quantitative sandwich ELISA (400+ kit variants), and cell function detection (Annexin V apoptosis kits, PI and 7-AAD cell cycle kits, CCK-8, TUNEL, membrane potential, calcium assays). The company also sells IVD raw materials — antibody pairs, fluorescent dyes, streptavidin, TMB luminescent substrate, and BSA — to upstream diagnostic kit manufacturers, and offers UltraFection 2.0/3.0 transfection reagents and protein/antibody labeling kits as supporting cell-biology consumables.
The business model is a horizontal, catalog-driven reagent franchise sold through the company's own 4abio.com storefront, with additional reach via the BioMart third-party marketplace, QQ-based sales and customer support, and a LinkedIn corporate page. Revenue is generated from one-time sales of research reagents and IVD raw materials (one-time license model) and from fee-for-service experimental work including flow cytometry detection, CBA detection, custom ELISA/KIT development, real-time PCR, cell sorting, exosome and oxidative stress services, and, through a partnership with PEPperPRINT, peptide chip microarray services. Pricing is not publicly disclosed; quotes are obtained by contacting the company directly by phone (0512-65829739) or email ([email protected] / [email protected]). The company is led by founder and president Mike Luo, operates with 51–100 employees, and has no disclosed institutional investors, parent company, subsidiaries, M&A activity, patents, awards, or certifications. Distribution is domestic-only (single country, China) with no stated global footprint claim.
4A Biotech firmographics
Firmographics- Name
- 4A Biotech
- Legal name
- Suzhou 4A Biotech Biotechnology Co., Ltd.
- Website
- https://4abio.com
- Company type
- Private
- Founded year
- 2009
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- 4A Biotech (Suzhou 4A Biotech Biotechnology Co., Ltd.) is a privately held Chinese supplier of immunology research reagents — including 1,277+ flow cytometry antibodies, 400+ ELISA kits, apoptosis and cell cycle kits, and IVD raw materials — sold to academic, IVD-manufacturing, and pharma research customers in China, with supporting fee-for-service experimental offerings.
- Ownership category
- akta.pro rank
4A Biotech industry classification
Industry- Product category
- Life Science Reagents
- NAICS
- In-Vitro Diagnostic Substance Manufacturing (325413)
- SIC
- In Vitro & In Vivo Diagnostic Substances (2835)
- akta.pro primary industry
- Reagents, Chemicals & Assay Kits (Buffers, Antibodies, ELISA, Enzymes) (HLAGAIAI)
- akta.pro secondary industries
- Biomarker Assay & Reagent Development (LDT/IVD assay design, antibodies/standards/controls) (HLAAAMAL), Specialty & Biomarker Laboratory Services (Immunoassays/Flow/Cytometry) (HLAGAEAB)
Keywords
Where 4A Biotech is headquartered
LocationHeadquarters
- HQ city
- Beijing
- HQ country
- China
- HQ region
- Asia
Offices1 record
Markets served
4A Biotech business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure
Revenue model
- Research reagent products: Sale of immunology research reagents including flow cytometry antibodies, ELISA kits, apoptosis/cell cycle detection kits, and cell function assay reagents directly to customers
- IVD raw materials: Supply of IVD (In-Vitro Diagnostics) raw materials including antibody pairs, fluorescent dyes, streptavidin, TMB luminescent substrates, and BSA for diagnostic kit manufacturers
- Experimental services: Customized experimental services including flow cytometry detection, CBA detection, peptide chip services (PEPperPRINT), ELISA/KIT development, real-time PCR detection, cell sorting, and exosome-related技术服务
Go-to-market motion1 record
Distribution channels1 record
Marketing channels4 records
4A Biotech product offering
Product offeringCore offering
4A Biotech (Suzhou 4A Biotech Biotechnology Co., Ltd.) manufactures and sells immunology research reagents and assay kits, including flow cytometry antibodies (1,277+ products), ELISA kits (400+ varieties), apoptosis and cell cycle detection kits, UltraFection transfection reagents, and IVD raw materials (antibody pairs, fluorescent dyes, streptavidin, TMB substrates, BSA). The company also provides customized experimental services such as flow cytometry detection, CBA detection, peptide chip services, ELISA/KIT development, real-time PCR, cell sorting, and exosome-related services to research institutions, IVD manufacturers, and pharmaceutical/biotech companies.
Product overview
4A Biotech (Suzhou 4A Biotech Biotechnology Co., Ltd.) is a biotechnology company specializing in immunology products with over ten years of experience. The company offers a comprehensive portfolio of life science reagents organized into three main categories: (1) Core assay products including Flow Cytometry Antibodies (primary and secondary) with extensive CD marker coverage and multiple fluorochrome conjugates, ELISA Kits (400+ varieties for human, mouse, rat, and swine), Cell Cycle Analysis Kits (PI and 7-AAD based), and Apoptosis Assay Kits (Annexin V combinations with various fluorochromes); (2) Transfection and cell biology reagents including UltraFection 2.0/3.0 transfection reagents and CCK-8 cell counting kits; and (3) IVD raw materials for diagnostic manufacturing. The company also provides experimental services including flow cytometry, CBA detection, custom ELISA development, peptide chip services (via PEPperPRINT partnership), PCR, and cell sorting. The product portfolio emphasizes immunology-focused applications with flow cytometry and ELISA as the primary technology platforms.
Differentiator
Problem solved
Functional benefit
Products and services
- Flow Cytometry Antibodies
- ELISA Kits
- Apoptosis Assay Kits
- Cell Cycle Analysis Kit
- UltraFection Transfection Reagents
- Cell Counting Kit-8 (CCK-8)
- IVD Raw Materials
- Experimental Services
Quantifiable outcome
- 400+ validated ELISA kits available
- +1 more outcomes
Companies that use 4A Biotech
Customer profileSegments3 records
Ideal customer profiles3 records
4A Biotech technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
4A Biotech partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- PEPperPRINTcore4A Biotech has officially launched PEPperPRINT peptide chip detection service, leveraging PEPperPRINT's unique peptide chip laser printing technology combined with 4A Biotech's 10+ years of immunology expertise to provide professional experimental services for domestic customers in China.
Scale indicators3 records
Recent moves6 records
Expansion highlights4 records
4A Biotech competitors and assessment
Company assessmentDirect peers
- Sino Biological: Sino Biological is a Beijing-based biotech reagent manufacturer offering recombinant proteins, antibodies, ELISA kits, and flow cytometry reagents. It is one of the closest Chinese analogs to 4A Biotech, directly competing across the same immunology reagent catalog and customer base in China.
- Elabscience: Elabscience is a Wuhan-based life-science tools supplier specializing in ELISA kits, flow cytometry antibodies, and cell-based assay reagents. It overlaps heavily with 4A Biotech's core product lines and competes for the same Chinese academic and IVD customers.
- ABclonal Technology: ABclonal Technology is a Chinese biotech reagent company focused on polyclonal and monoclonal antibodies, ELISA kits, and IVD raw materials. Its product mix in immunology research reagents and IVD raw materials mirrors 4A Biotech's core catalog and customer segments.
- Miltenyi Biotec: Miltenyi Biotec is a European-based life-science tools provider specializing in cell sorting, flow cytometry, and immunology reagents. Its reagent and assay kit portfolio directly competes with 4A Biotech's flow cytometry antibody and cell function detection kits.
- Cell Signaling Technology (CST): CST is a US-based leader in antibodies and immunology reagents, including flow cytometry antibodies and ELISA kits. It competes with 4A Biotech in the research antibody and immunoassay space, particularly with Chinese universities and pharma customers sourcing globally.
- GenScript: GenScript is a Chinese-headquartered life-science tools and CRO provider offering antibodies, ELISA kits, cell therapy services, and IVD reagents. It is a comparable Chinese peer with overlapping product categories in immunology reagents and IVD raw materials.
- Bio-Techne (R&D Systems): Bio-Techne, through R&D Systems, is a leading global supplier of ELISA kits, cytokines, and flow cytometry reagents. Its catalog breadth in ELISA and immunology reagents makes it a direct functional competitor to 4A Biotech's flagship product categories.
- BioLegend (Revvity): BioLegend, now part of Revvity, is one of the largest flow cytometry antibody providers globally. Its portfolio of over 18,000 reagents overlaps directly with 4A Biotech's 1,277+ flow cytometry antibody catalog on key CD markers and immunology panels.
Broad incumbents
- Thermo Fisher Scientific (Invitrogen/eBioscience): Thermo Fisher Scientific, through its Invitrogen and eBioscience brands, is the dominant global supplier of flow cytometry antibodies, ELISA kits, and cell biology reagents. Its immunology tools portfolio overlaps with 4A Biotech's core offerings and sets the competitive benchmark in Chinese institutional procurement.
- BD Biosciences: BD Biosciences is a global incumbent in flow cytometry instruments and reagents, including clinical-grade antibodies and assay kits. Although a much larger, broader portfolio player, its clinical flow cytometry and immunology reagent lines directly overlap with 4A Biotech's flow antibody and apoptosis/cell-cycle kits business.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks5 records
Key highlights6 records
Customer concentration
4A Biotech social profiles
Digital presence4A Biotech financial estimates
Financial estimateRevenue estimate
Valuation estimate
4A Biotech leadership team
Management profileNumber of profiles
Profiles1 record
4A Biotech funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
4A Biotech M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about 4A Biotech
What does 4A Biotech do?
4A Biotech (Suzhou 4A Biotech Biotechnology Co., Ltd.) manufactures and sells immunology research reagents and assay kits, including flow cytometry antibodies (1,277+ products), ELISA kits (400+ varieties), apoptosis and cell cycle detection kits, UltraFection transfection reagents, and IVD raw materials (antibody pairs, fluorescent dyes, streptavidin, TMB substrates, BSA). The company also provides customized experimental services such as flow cytometry detection, CBA detection, peptide chip services, ELISA/KIT development, real-time PCR, cell sorting, and exosome-related services to research institutions, IVD manufacturers, and pharmaceutical/biotech companies.
Is 4A Biotech a public or private company?
4A Biotech is a private company. It is classified as unknown and is currently operating.
When was 4A Biotech founded?
4A Biotech was founded in 2009. It employs 51 to 100 people.
Where is 4A Biotech based?
4A Biotech is headquartered in Beijing, China, in the Asia region.
How does 4A Biotech make money?
Three revenue lines are on record. Research reagent products are the primary driver. The others are IVD raw materials and experimental services.
Who are 4A Biotech's main competitors?
Direct peers on record are Sino Biological, Elabscience, ABclonal Technology, Miltenyi Biotec, Cell Signaling Technology (CST), GenScript, Bio-Techne (R&D Systems) and BioLegend (Revvity). Broad incumbents are Thermo Fisher Scientific (Invitrogen/eBioscience) and BD Biosciences.
Does 4A Biotech have an API?
No public API is recorded for 4A Biotech.
What industry is 4A Biotech in?
4A Biotech's product category is Life Science Reagents. Its primary akta.pro industry code is HLAGAIAI, Reagents, Chemicals & Assay Kits (Buffers, Antibodies, ELISA, Enzymes), with a secondary code of HLAAAMAL, Biomarker Assay & Reagent Development (LDT/IVD assay design, antibodies/standards/controls). Its NAICS code is 325413 and its SIC code is 2835.