Complete sourcing guide for Casein (Slow-Release) Protein including supplier directory, FOB pricing, product specifications, and market validation.
FOB Price Range
$20 - $77.32
Verified Suppliers
5
Sourcing Strategies
2
AI-generated product visualizations for Casein (Slow-Release) Protein
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A quick preview of supplier standards, production requirements, and sourcing intelligence from our verified network.
Verified suppliers with years of experience and quality strengths
| Supplier | Images | Tier | Years | Response | Favorites | Key Strengths | Product Expertise | Shop Ratings | Contact |
|---|---|---|---|---|---|---|---|---|---|
Weifang Meikaiwei Pharmaceutical Technology Co., Ltd. Shandong Weifang Zhucheng City Mizhou Street High-speed Rail Community South | Tier 4 | 5+ | 0.5% | 722 | Excellent QualityLow ReturnsGood DisputeGood Service | Protein Powder Amino AcidsDietary FiberDietary Supplement | Quality 5.0 Returns 5.0 Logistics 4.6 Consult 5.0 Dispute 5.0 Overall 4.5 | View contact | |
Jiangsu Tianshun Biotechnology Co., Ltd. Jiangsu Xuzhou Xuzhou City Quanshan District Emerald Bay K16 Kaiyuan Changqing Comprehensive Building 2-416 | Tier 4 | 5+ | 0% | 1.9k | Excellent QualityGood DisputeGood Service | — | Quality 5.0 Returns 3.7 Logistics 3.3 Consult 5.0 Dispute 5.0 Overall 5.0 | View contact | |
Guangzhou Hongyi Food Additive Co., Ltd. Guangdong Guangzhou Guangzhou City Baiyun District Yongtai Road Tongtai 2nd Street | — | Tier 4 | 5+ | 0% | 701 | Excellent QualityLow ReturnsGood DisputeGood Service | — | Quality 5.0 Returns 5.0 Logistics 2.9 Consult 5.0 Dispute 5.0 Overall 4.0 | View contact |
Shandong Qiangnuo Food Ingredient Co., Ltd. Shandong Jinan Jinan City Shizhong District Jingyi Road No. 88 Mingzhu Business Port 3512 | Tier 4 | 5+ | 0% | 459 | Excellent QualityLow ReturnsGood DisputeGood Service | — | Quality 5.0 Returns 5.0 Logistics 4.1 Consult 5.0 Dispute 5.0 Overall 4.5 | View contact | |
Anhui Shunchengda Biotechnology Co., Ltd. Anhui Hefei Hefei City | Tier 4 | 5+ | 0.93% | 63 | Excellent QualityLow ReturnsGood DisputeGood Service | Nutrient FortifierSweetenerThickener | Quality 5.0 Returns 5.0 Logistics 3.7 Consult 4.0 Dispute 5.0 Overall 4.5 | View contact |
0 verified suppliers across 3 manufacturing hubs
Average Ratings Across All Suppliers
0.0
Quality
0.0
Logistics
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Returns
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Disputes
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Support
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Overall
FOB pricing by manufacturing cluster, compare costs across regions
| Region | Suppliers | Min FOB | Avg FOB | Max FOB |
|---|---|---|---|---|
| Jiaozuo, Henan | 1 | ¥5 | ¥26 | ¥122 |
| Jining, Shandong | 1 | ¥4 | ¥70 | ¥200 |
| Qingdao, Shandong | 1 | ¥5 | ¥9 | ¥19 |
Suppliers for casein protein have been identified in Shandong (Jining, Qingdao) and Henan (Jiaozuo). While the specific supply base for casein appears fragmented, the presence in Shandong is notable as the province is a major manufacturing hub for other nutritional ingredients, particularly plant-based proteins, suggesting a developed industrial ecosystem.
Best For: Exploring new or niche suppliers of specialized casein protein formulations.
Why Strong: Represents an emerging, alternative sourcing location for casein protein outside of the more established coastal hubs. The presence of a supplier indicates capability in the region.
⚠️ This area is not identified as a major protein manufacturing hub, suggesting the local supply chain and ecosystem may be less developed compared to ot...
Best For: Tapping into a region with a strong foundation in protein production for potential cost and supply chain efficiencies.
Why Strong: Located within Shandong province, a major center for protein powder manufacturing. This provides access to a broader ecosystem of nutritional ingredient production and related technical expertise.
⚠️ The province's primary specialization is in plant-based proteins, so specific expertise and capacity for casein may be more limited.
Best For: Sourcing from suppliers with potential export experience and access to efficient global shipping routes.
Why Strong: As a key city within the Shandong protein cluster, Qingdao benefits from a mature industrial base and excellent logistics as a major port city, facilitating international trade.
⚠️ Buyers should verify supplier-specific experience with casein, as the region's dominant focus is on plant-based proteins like pea protein.
Top-tier verified manufacturers with quality ratings and capabilities
| Company | Tier | Years | Quality | Logistics |
|---|---|---|---|---|
| Weifang Meikaiwei Pharmaceutic... | TIER 4 | 0+ | 5.0 | 4.6 |
| Jiangsu Tianshun Biotechnology... | TIER 4 | 0+ | 5.0 | 3.3 |
| Guangzhou Hongyi Food Additive... | TIER 4 | 0+ | 5.0 | 2.9 |
| Shandong Qiangnuo Food Ingredi... | TIER 4 | 0+ | 5.0 | 4.1 |
| Anhui Shunchengda Biotechnolog... | TIER 4 | 0+ | 5.0 | 3.7 |
| Supplier | Yrs | Rating ↓ | Actions |
|---|
Tip: Click on a supplier row to see detailed ratings breakdown. Ratings above 4.0 indicate reliable suppliers.
The most significant cost driver for casein protein is the raw material itself. To manage costs, focus on the protein source (blend vs. pure, grass-fed vs. standard), then optimize packaging (pouch vs. tub), and finally adjust the complexity of the formula by removing non-essential functional additives.
Confidence: High| Pricing Lever | Cost Impact | Quality Risk | MOQ Impact | Lead Time | Notes |
|---|---|---|---|---|---|
| Switch from 100% Micellar Casein to a blend (e.g., 80% Casein/20% Whey) | ↓ High | Medium | - None | - None | Reduces raw material cost but may dilute the 'slow-release' marketing claim. |
| Use standard Micellar Casein instead of certified 'Grass-Fed' | ↓ Medium–High | Low | - None | - None | Loses a key premium marketing attribute and justification for a higher retail price. |
| Remove functional additives (digestive enzymes, Zinc/Magnesium) | ↓ Medium | Low | - None | ↓ Low | Simplifies the formula but removes key differentiators for the premium market. |
| Switch from rigid tubs to gusseted pouches | ↓ Medium | High | - None | - None | Lowers unit and shipping costs, but requires specifying a high-quality, non-clogging ziplock to avoid major customer complaints. |
| Utilize manufacturer's stock flavors instead of custom development | ↓ Low–Medium | Medium | ↓ Low | ↓ Medium | Reduces R&D time and cost, but offers less flavor uniqueness. |
| Increase MOQ (to 1,000+ units) | ↓ Medium–High | Low | ↑ High | - None | Enables economies of scale for raw material purchasing and production runs. |
| Remove the included measuring scoop | ↓ Low | Low | - None | - None | Saves a few cents per unit but is a major source of customer annoyance and negative reviews. |
Ready to formulate your perfect casein protein? Submit your specs and let us connect you with certified manufacturers who can meet your quality and budget goals!
The most common and damaging quality issues are poor mixability (clumps), packaging seal failure, and inaccurate protein content. These issues directly impact user experience and brand trust, leading to negative reviews and returns.
Confidence: HighRoot Cause
Non-instantized powder; incorrect particle size; insufficient or low-quality emulsifier (lecithin).
What to Specify / Ask Supplier
Require 'instantized' or 'agglomerated' micellar casein. Specify use of sunflower lecithin. Request pre-production samples for mixability testing.
QC Check (What "Good" Looks Like)
Mix one scoop in 250ml water with a shaker. Let sit for 30 seconds. Check for clumps and sediment. A good product dissolves smoothly with no gritty mouthfeel.
Root Cause
Low-quality pouch material; cheap ziplock mechanism; misalignment during heat sealing.
What to Specify / Ask Supplier
For pouches, specify heavy-gauge material with a robust, non-clogging ziplock. For tubs, require a tamper-evident induction seal under the lid.
QC Check (What "Good" Looks Like)
Cycle test the ziplock 20 times on random samples. For tubs, visually inspect the induction seal for 100% adhesion with no gaps.
Root Cause
Adulteration with cheaper non-protein nitrogen sources (e.g., glycine); using low-quality raw materials; poor process control.
What to Specify / Ask Supplier
Require a Certificate of Analysis (CoA) for every batch. Prohibit amino acid spiking. State the requirement for periodic third-party lab testing to verify protein content.
QC Check (What "Good" Looks Like)
Send random samples from a production run to an independent lab for nitrogen content testing to verify protein claims on the label.
Root Cause
Batch-to-batch variation in flavorings; low-grade sweeteners (e.g., bitter stevia extract); poor mixing during production.
What to Specify / Ask Supplier
Provide an approved 'golden sample' for flavor matching. Specify natural flavors and high-purity sweeteners. Require batch consistency records.
QC Check (What "Good" Looks Like)
Organoleptic testing: Compare production sample's taste, smell, and color against the approved golden sample under consistent conditions.
Root Cause
Poor raw material screening; unhygienic production environment (non-GMP certified facility).
What to Specify / Ask Supplier
Supplier must provide proof of current GMP certification. Require batch CoAs that include microbiological and heavy metal testing results.
QC Check (What "Good" Looks Like)
Review all batch CoAs before shipment. Periodically send samples for third-party verification of micro and heavy metal limits.
Root Cause
Poor inventory management (no FIFO); using old raw materials.
What to Specify / Ask Supplier
Require a minimum of 80% remaining shelf life upon delivery. Specify the maximum acceptable age of the product post-manufacture.
QC Check (What "Good" Looks Like)
During pre-shipment inspection, check the 'Best By' or 'Manufactured On' dates on a random sample of finished goods cartons.
Root Cause
Natural thickness of casein; individual sensitivity; lack of digestive aids in the formula.
What to Specify / Ask Supplier
For premium products, specify the inclusion of a digestive enzyme blend (e.g., Protease) at a specific activity level (HUT).
QC Check (What "Good" Looks Like)
This is a formulation attribute, best verified through user testing of pre-production samples rather than a simple QC check on the final product.
Don't risk your brand's reputation. Source with us and we'll build a comprehensive QC plan, including third-party lab testing, to guarantee your product is safe, effective, and matches your label claims.
Use this data to create your product specifications, reach out to suppliers, and validate your pricing strategy. Start with small sample orders to test quality.
Real product samples with pricing, MOQ, and supplier ratings
| Product | Title | MOQ | Price (CNY) | Price (USD) | Sale QuantityHow many units sold | OrdersHow many orders in Alibaba/1688 | Rating | Tiered Pricing | Key Features | Link | Action |
|---|---|---|---|---|---|---|---|---|---|---|---|
 | Yuwang Shansong Soy Protein Isolated Bread Noodles Meat Products Solid Beverage High Purity Nutritional Enhancer | ¥19 | $3.19 | 4,900 | 130 | 5.0 |
| Inquire with customer serviceWopuxinDry and ventilated place | Source Item | ||
 | Casein food grade casein casein casein welcome new and old customers to call | ¥57 | $9.58 | 0 | 403 | 5.0 |
| YankeGB101 | Source Item | ||
 | Casein Is Available in Stock. Edible Casein. Food-Grade Casein Powder. Casein. Cheese Protein. Cheesein | ¥65 | $10.92 | 0 | 37 | 5.0 |
| 99豫见鸿易Store at room temperature and dry | Source Item | ||
 | Casein Food Grade Casein, Cheese Protein, Meat and Dairy Product Thickener and Emulsifier | ¥56 | $9.41 | 20 | 138 | 5.0 |
| Consult customer serviceHualingStore at room temperature in a dry place | Source Item | ||
 | Huashan Antelope Food Grade Casein Protein Supplement | ¥62 | $10.42 | 500 | 0 | 5.0 |
| Store at room temperature in a dry placeIn stockPowder | Source Item | ||
 | Casein Peptide Milk Source Small Molecule Active Peptide Blue Power Biological Food Grade Protein Peptide Whey Protein | ¥800 | $134.40 | 0 | 1 | 5.0 |
| ShandongNo24 months | Source Item | ||
 | Food Grade Casein, Caseinate, Thickener, Emulsifier for Meat, Dairy Products, and Beverages | ¥1425 | $239.40 | 0 | 0 | 3.7 |
| Cool and dry placeIn stockPowder | Source Item | ||
 | Slow-Release Protein Canned Micellar Casein 500g Canned Fitness Supplement Casein Bedtime Protein Powder | ¥79 | $13.27 | 0 | 32 | 5.0 |
| Mainland ChinaNo24 months | Source Item | ||
 | New Zealand Constant Natural Cheese Protein Coffee Mate Food Grade Cheese acid casein | ¥128 | $21.50 | 10 | 21 | 5.0 |
| Consult Customer ServiceFonterraConsult Customer Service | Source Item | ||
 | Casein Manufacturers Supply Casein Food Grade Thickener Casein Dairy Jelly Casein | ¥65 | $10.92 | 100 | 12 | 5.0 |
| -Cool and dry placeSpot + Order | Source Item |
Choose from 2 pricing strategies based on your target market
This sourcing playbook provides actionable guidance for importing Casein (Slow-Release) Proteinproducts. Our data-driven approach combines supplier intelligence with market validation to help you make informed purchasing decisions and minimize sourcing risks.
First orders typically require 30-50% deposit with balance before shipment (T/T). As relationships develop, suppliers may offer 30/70 splits or even open terms for established buyers. Letter of Credit (L/C) is available for larger orders but involves additional fees.
Document issues with photos immediately upon receipt. Most suppliers offer replacement or credit for legitimate defects within agreed AQL limits. Having clear quality specifications in your purchase order strengthens your position in disputes.
Third-party inspection is recommended for first orders and orders over $10,000. Services like SGS or Bureau Veritas cost $200-400 per inspection and can prevent costly quality issues. Pre-shipment inspection is most common; in-line inspection adds additional assurance.
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