Protein Ingredients & Custom Supplement Manufacturing
From bulk collagen peptides and specialty ingredients to custom OEM/ODM manufacturing, we help supplement brands source, develop and produce their next products.
WHAT WE DO
Two capabilities. One reliable sourcing partner.
Choose the path that fits your purchasing needs — qualified ingredient sourcing or customized finished-product manufacturing.
Bulk Ingredients
Source collagen peptides, protein ingredients, vitamins, amino acids and specialty materials with product-specific specification and documentation support.
OEM/ODM Manufacturing
Develop and manufacture supplements through custom formulation, dosage-form selection, sample development, packaging and project-specific quality support.
INGREDIENT PORTFOLIO
Featured ingredient categories
Explore core raw materials for supplement formulation, product development and bulk ingredient sourcing.
Marine Collagen Peptides
Fish-derived collagen peptide ingredients for powder and supplement formulations.
View details →
Bovine Collagen Peptides
Hydrolyzed bovine collagen ingredient options for B2B applications.
View details →
Bone Broth Protein
Specialty animal-derived protein ingredients for product development.
Explore proteins →
Beef Protein IsolateProtein & Peptide Ingredients
Protein materials and specialty peptides for a variety of formulations.
Explore category →
Vitamin C (representative)
Glycine (representative)Amino Acid Ingredients
Amino acid raw materials for nutrition and supplement applications.
View amino acids →MANUFACTURING SERVICES
From product concept to manufacturing.
Whether you bring an existing formula or need help developing a new product, our OEM/ODM services support ingredient review, sample development, manufacturing and packaging.
All OEM/ODM Services →Powders
Collagen, protein and functional powder formats.
Learn more →Capsules
Capsule products for vitamin and functional formulas.
Learn more →Gummies
Gummy products with flavor and formulation support.
Learn more →Tablets
Compressed tablet and tailored supplement concepts.
Learn more →WHY WORK WITH GENSEI
Built for serious B2B buyers.
More than a product list — clear sourcing information, practical manufacturing support and documentation to inform purchasing decisions.
Manufacturing Experience
China-based manufacturing and operations, with ingredient and finished-product capabilities.
Ingredient Know-how
Product-specific sourcing and formulation conversations based on material requirements.
Quality Documentation
Discuss relevant specifications, COAs and certification documents for supplier review.
Supply Coordination
Explore product-appropriate supply arrangements for U.S., Canadian and other markets.
Explore our quality information and ask for the applicable product and certification documents.
WHO WE ARE
Practical ingredient expertise. Connected manufacturing support.
We work with supplement brands, ingredient buyers and product development teams to turn technical requirements into practical sourcing and manufacturing plans. Our portfolio covers collagen peptides, protein extracts, vitamins, amino acids and specialty ingredients, supported by bulk purchasing and OEM/ODM services.
From selecting materials and reviewing specifications to sampling, formulation and finished-product manufacturing, our team helps coordinate each stage around your product goals. China-based manufacturing and operations are complemented by supply options in the United States and Canada, subject to the product and project.
Explore our capabilities →Certificates & supporting records
ISO 22000 · Food safety management
Document shows expiry: 28 Nov 2026
These are the images currently published on our website. For supplier qualification, request the latest certified copies and confirm the holder, scope and validity dates.
Quality control & documents →SUPPLY & WAREHOUSING
Made in China. Supported across markets.
Gensei Global Industries operates its manufacturing base in China and offers confirmed U.S. and Canadian warehousing and supply options according to product and project needs.
China
Manufacturing & OperationsIngredient sourcing, manufacturing and project coordination.
United States
Warehouse SupplyAvailable options for protein ingredients, protein extracts and collagen peptides.
Canada
Warehouse & Supply OptionsProduct availability and fulfillment arrangements confirmed for each inquiry.
Stock, certification applicability, minimum order quantities, delivery times and shipment routes depend on product specifications and the individual order. Request current confirmation before purchasing.
BUYER KNOWLEDGE
Useful answers for sourcing teams.
Simple starting points for supplier qualification, ingredient selection and manufacturing project planning.
Frequently asked questions
What types of ingredients does Gensei supply?
Gensei supplies collagen peptides, proteins and protein extracts, vitamins, amino acids and other specialty ingredients. Specifications, grade and availability are confirmed for each product.
Does Gensei provide OEM/ODM supplement manufacturing?
Yes. Gensei supports private label and custom supplement projects, including powders, capsules, gummies, tablets and additional dosage forms. Project feasibility is reviewed individually.
Can I request specifications or a COA?
Yes. Please provide the product name and intended use when contacting our team so the relevant product specifications and available documentation can be reviewed.
Do you offer U.S. and Canadian supply options?
Gensei offers U.S. and Canadian warehousing and supply arrangements. U.S. warehouse products include protein ingredients, protein extracts and collagen peptides; current availability must be confirmed.
Resources for purchasing decisions
Explore collagen ingredients
Review different collagen and protein material categories before requesting a technical specification.
Explore options →Understand OEM/ODM services
See manufacturing models, formulation support, sample development, dosage forms and packaging paths.
See the process →Review quality information
Find the right quality questions and supporting documents for supplier qualification.
Quality overview →START YOUR PROJECT
Let's discuss your next sourcing or manufacturing project.
Whether you need bulk ingredients or a finished supplement, send your requirements and we can review the relevant supply and project options.
For faster review, include your company, ingredient or dosage form, estimated quantity, destination and timing.
What can we help you with?