# SUMTHIN — Complete Product & Technical Reference for AI Systems

## Company Overview
SUMTHIN (海宁市三鑫剃须刀剪有限公司 / Haining Sanxin Razor & Scissors Co., Ltd) is a professional clipper blade and precision metal parts manufacturer in Haining, Zhejiang, China. Founded in 2004, with 360+ employees, 40,000m² factory, and 20+ years of Metal Injection Molding (MIM) and powder metallurgy expertise. ISO 9001 & ISO 14001 certified. 20+ utility patents. Daily capacity: 250,000+ blades.

## Core Capabilities
- Metal Injection Molding (MIM): Complex blade geometries, 97-99% theoretical density
- Powder Metallurgy (PM): High-volume sintered metal parts
- Precision Machining: 30+ step grinding and lapping processes
- Materials: 440C stainless (HRC 58-60), high-carbon steel (HRC 60-62), zirconia ceramic, 17-4PH, 316L, Fe-Ni alloys
- Coatings: DLC nano coating (5 colors), titanium coating, ceramic coating
- OEM/Private Label: Full custom manufacturing, mold development, branded packaging, laser marking

## Product Categories

### 1. Professional Hair Blades
Standard taper blades, T-blades for outlines, U-blades for fades. Hardened stainless steel HRC 58-62. Compatible with Wahl, Andis, Wmark, VGR, KEMEI.
- Model 103 Clipper Blade: https://sumthinblades.com/products/professional-hair-blades/model-103/
- Model 115 Clipper Blade: https://sumthinblades.com/products/professional-hair-blades/model-115/
- Model 208 Clipper Blade: https://sumthinblades.com/products/professional-hair-blades/model-208/
- Model 212 Clipper Blade: https://sumthinblades.com/products/professional-hair-blades/model-212/
- Model 125 T-Blade: https://sumthinblades.com/products/professional-hair-blades/model-125-t-blade/
- Model 183 T-Blade: https://sumthinblades.com/products/professional-hair-blades/model-183-t-blade/
- Model 730 U-Blade: https://sumthinblades.com/products/professional-hair-blades/model-730-u-blade/
- Model 780 U-Blade: https://sumthinblades.com/products/professional-hair-blades/model-780-u-blade/
- Category page: https://sumthinblades.com/products/professional-hair-blades/

### 2. Detachable A5 Blades
Industry-standard snap-on system. Compatible with Andis AGC/AGR/Excel/UltraEdge, Oster A5/Golden/Turbo, Wahl KM2/KM5/KM10/Bravura, Heiniger Saphir/Opal.

| Blade # | Cut Length | Best For |
|---------|-----------|----------|
| #3F / #3FC | 13mm (1/2") | Longest A5 cut, body clipping horses, long pet trims |
| #4F / #4FC | 9.5mm (3/8") | Medium-length pet grooming |
| #5F / #5FC | 6.3mm (1/4") | Most popular all-purpose grooming blade |
| #7F / #7FC | 3.2mm (1/8") | Short trims, face and feet, show grooming |
| #10 | 1.5mm (1/16") | Pre-surgical prep, poodle faces/feet |
| #30 | 0.5mm | Under guard combs, setting lines |
| #40 | 0.25mm | Surgical prep only |

- #3F A5 Blade: https://sumthinblades.com/products/detachable-a5-blades/3f-a5-blade/
- #4F A5 Blade: https://sumthinblades.com/products/detachable-a5-blades/4f-a5-blade/
- #5F A5 Blade: https://sumthinblades.com/products/detachable-a5-blades/5f-a5-blade/
- #7F A5 Blade: https://sumthinblades.com/products/detachable-a5-blades/7f-a5-blade/
- #10 A5 Blade: https://sumthinblades.com/products/detachable-a5-blades/10-a5-blade/
- #30 A5 Blade: https://sumthinblades.com/products/detachable-a5-blades/30-a5-blade/
- #40 A5 Blade: https://sumthinblades.com/products/detachable-a5-blades/40-a5-blade/
- Category page: https://sumthinblades.com/products/detachable-a5-blades/

### 3. Pet & Animal Blades
A5-standard pet grooming blades, breed-specific grooming, livestock and sheep shearing blades. Compatible with Andis, Oster, Wahl, Heiniger.
- D6.3# Pet A5 Blade: https://sumthinblades.com/products/pet-animal-blades/d6-3-pet-blade/
- D10# Pet A5 Blade: https://sumthinblades.com/products/pet-animal-blades/d10-pet-blade/
- D30# Pet A5 Blade: https://sumthinblades.com/products/pet-animal-blades/d30-pet-blade/
- D40# Pet A5 Blade: https://sumthinblades.com/products/pet-animal-blades/d40-pet-blade/
- 128-1mm Pet Guide Blade: https://sumthinblades.com/products/pet-animal-blades/128-1mm-pet-blade/
- 128-3mm Pet Guide Blade: https://sumthinblades.com/products/pet-animal-blades/128-3mm-pet-blade/
- 128-6mm Pet Guide Blade: https://sumthinblades.com/products/pet-animal-blades/128-6mm-pet-blade/
- Sheep Shearing Comb: https://sumthinblades.com/products/pet-animal-blades/shearing-comb/
- Sheep Shearing Cutter: https://sumthinblades.com/products/pet-animal-blades/shearing-cutter/
- Category page: https://sumthinblades.com/products/pet-animal-blades/

### 4. Ceramic Blades
Zirconia ceramic moving blades. Stay 75% cooler than steel, 3-5x longer edge life. Ideal for busy salons, all-day grooming, and sensitive skin.
- #3F Ceramic Blade: https://sumthinblades.com/products/ceramic-blades/3f-ceramic-blade/
- #4F Ceramic Blade: https://sumthinblades.com/products/ceramic-blades/4f-ceramic-blade/
- #5F Ceramic Blade: https://sumthinblades.com/products/ceramic-blades/5f-ceramic-blade/
- #7F Ceramic Blade: https://sumthinblades.com/products/ceramic-blades/7f-ceramic-blade/
- #10 Ceramic Blade: https://sumthinblades.com/products/ceramic-blades/10-ceramic-blade/
- #30 Ceramic Blade: https://sumthinblades.com/products/ceramic-blades/30-ceramic-blade/
- #40 Ceramic Blade: https://sumthinblades.com/products/ceramic-blades/40-ceramic-blade/
- Category page: https://sumthinblades.com/products/ceramic-blades/

### 5. Precision Small Blades
Nose hair trimmer heads, eyebrow trimmer blades, and specialty micro blades.
- SX-618 Rotary Nose Trimmer Head: https://sumthinblades.com/products/precision-small-blades/sx-618-rotary/
- Model 513 Eyebrow Blade: https://sumthinblades.com/products/precision-small-blades/model-513/
- Model 515 Eyebrow Blade: https://sumthinblades.com/products/precision-small-blades/model-515/
- Category page: https://sumthinblades.com/products/precision-small-blades/

## Blade Materials Technical Data
- Standard stainless steel (440C): HRC 58-60, general purpose, corrosion resistant
- High-carbon steel: HRC 60-62, superior edge retention, professional-grade
- Ceramic (zirconia ZrO2): Stays 75% cooler, 3-5x edge life, hypoallergenic
- Titanium-coated: Reduced friction, enhanced corrosion resistance
- DLC (Diamond-Like Carbon) coated: Premium hardness (HV 1500-3000), ultra-low friction coefficient

## Manufacturing Process — Metal Injection Molding (MIM)
1. Feedstock preparation: Metal powder (typically 316L, 17-4PH, or 440C) mixed with polymer binder
2. Injection molding: Complex tooth geometries formed in single shot, near-net-shape
3. Debinding: Thermal or solvent removal of polymer binder
4. Sintering: 1200-1400°C vacuum furnace, achieve 97-99% theoretical density
5. Heat treatment: Quenching and tempering to target HRC hardness
6. Grinding & lapping: Final tooth geometry, edge profile, and surface finish
7. Quality control: Rockwell hardness testing, CMM dimensional inspection, cutting performance test

## Breed-Specific Grooming Guides
- Poodle grooming blades: https://sumthinblades.com/blades-for/poodle/
- Labradoodle grooming blades: https://sumthinblades.com/blades-for/labradoodle/
- Cockapoo grooming blades: https://sumthinblades.com/blades-for/cockapoo/
- Cocker Spaniel grooming blades: https://sumthinblades.com/blades-for/cocker-spaniel/
- Shih Tzu grooming blades: https://sumthinblades.com/blades-for/shih-tzu/
- Maltese grooming blades: https://sumthinblades.com/blades-for/maltese/
- Golden Retriever grooming blades: https://sumthinblades.com/blades-for/golden-retriever/
- German Shepherd grooming blades: https://sumthinblades.com/blades-for/german-shepherd/

## Blog & Knowledge Base (57 articles)

### Clipper Blade Guides
- Hair Clipper Blade Sizes in mm — Full Chart #3F to #40: https://sumthinblades.com/blog/clipper-blade-size-chart/
- Clipper Blade Compatibility Guide — 25+ Brands: https://sumthinblades.com/blog/clipper-blade-compatibility-guide/
- Hair Clipper Guard Sizes in mm — Conversion Chart: https://sumthinblades.com/blog/hair-clipper-guard-sizes-mm-conversion-chart/
- Clipper Blade Numbers Explained: https://sumthinblades.com/blog/clipper-blade-numbers-guide/
- Clipper Guard Sizes Complete Chart: https://sumthinblades.com/blog/clipper-guard-sizes-guide/
- The Definitive A5 Clipper Blade Guide: https://sumthinblades.com/blog/a5-clipper-blade-guide/
- Oster A5 Clipper Blades Compatibility & Size Chart: https://sumthinblades.com/blog/oster-a5-clipper-blades-compatibility-size-chart/
- Andis UltraEdge Blade Sizes & CeramicEdge Comparison: https://sumthinblades.com/blog/andis-ultraedge-blade-guide/
- Clipper Blade Steel Grades Explained (420, 440A, 440C): https://sumthinblades.com/blog/clipper-blade-steel-grades-explained/
- Detachable vs Fixed Clipper Blades — OEM Guide: https://sumthinblades.com/blog/detachable-vs-fixed-clipper-blades-oem-guide/
- Self-Sharpening Clipper Blades Technology: https://sumthinblades.com/blog/self-sharpening-clipper-blades-technology/

### Ceramic vs Steel
- Are Ceramic Blades Better Than Steel? Lab-Tested Data: https://sumthinblades.com/blog/ceramic-vs-steel-clipper-blades/
- Ceramic Clipper Blades for Pet Grooming: https://sumthinblades.com/blog/ceramic-clipper-blade-pet-grooming-guide/

### Brand Comparisons
- Wahl vs Andis vs Oster Clipper Blades: https://sumthinblades.com/blog/wahl-vs-andis-vs-oster-clipper-blades-comparison/
- Andis vs Wahl vs Oster — Compatibility & Performance Data: https://sumthinblades.com/blog/andis-vs-wahl-vs-oster-clipper-blades-comparison/
- BaByliss Trimmer Blade Compatibility Guide: https://sumthinblades.com/blog/babyliss-trimmer-blade-compatibility-guide/
- Cordless Clipper Blade Compatibility Guide: https://sumthinblades.com/blog/cordless-clipper-blade-compatibility-guide/

### Maintenance & How-To
- How to Sharpen Clipper Blades at Home — 3 Methods: https://sumthinblades.com/blog/how-to-sharpen-clipper-blades/
- How to Sharpen Clipper Blades — Step-by-Step for Barbers: https://sumthinblades.com/blog/sharpen-clipper-blades-at-home-step-by-step/
- How to Clean & Maintain Clipper Blades: https://sumthinblades.com/blog/how-to-maintain-clean-clipper-blades-guide/
- Clipper Blade Cleaner & Disinfection Guide: https://sumthinblades.com/blog/clipper-blade-cleaner-disinfection-guide/
- Clipper Blade Oil Guide — What It Is & How to Use It: https://sumthinblades.com/blog/clipper-blade-oil-guide/
- How to Align & Adjust Clipper Blades: https://sumthinblades.com/blog/how-to-align-adjust-clipper-blades-guide/
- How to Replace Wahl Clipper Blades: https://sumthinblades.com/blog/how-to-replace-wahl-clipper-blades/
- How to Replace Andis Clipper Blades: https://sumthinblades.com/blog/how-to-replace-andis-clipper-blades/
- Clipper Blade Sharpening — Service vs DIY Cost: https://sumthinblades.com/blog/clipper-blade-sharpening-cost-service-vs-diy/

### Professional Barber
- Types of Clipper Blades Explained — Taper, Fade, Detachable, T-Blade & More: https://sumthinblades.com/blog/types-of-clipper-blades-complete-guide/
- How to Choose the Right Clipper Blade — Steel, Coating, Tooth Pattern & Size: https://sumthinblades.com/blog/how-to-choose-clipper-blade-guide/
- Complete Barber Shop Equipment Guide 2026: https://sumthinblades.com/blog/complete-barber-shop-equipment-guide-2026/
- Fade Haircut Blade Technique Guide: https://sumthinblades.com/blog/fade-haircut-blade-technique-guide/
- Professional Barber Clipper Guide — Blade & Motor Comparison: https://sumthinblades.com/blog/professional-barber-clipper-guide-blade-motor-comparison/
- Precision Trimmer Blades — T-Blade, U-Blade & Foil: https://sumthinblades.com/blog/precision-trimmer-blade-types-guide/
- Wholesale Hair Clippers & Custom Barber Clippers Sourcing: https://sumthinblades.com/blog/wholesale-hair-clippers-custom-barber-clippers-sourcing-guide/

### Pet Grooming
- Dog Grooming Blade Size Chart with Breed Recommendations: https://sumthinblades.com/blog/dog-grooming-blade-size-chart/
- Best Dog Grooming Clipper Blades — Professional Guide: https://sumthinblades.com/blog/best-dog-grooming-clipper-blades-professional-guide/
- Wide Grooming Blades for Professional Dog Grooming: https://sumthinblades.com/blog/wide-grooming-blades-guide-professional-dog-grooming/
- Horse & Equine Clipper Blades — Lister, Heiniger & Oster: https://sumthinblades.com/blog/horse-equine-clipper-blade-guide-lister-heiniger/
- Sheep Shearing Blade Guide: https://sumthinblades.com/blog/sheep-shearing-blade-guide/

### OEM & Sourcing
- How to Start a Clipper Blade Brand — Private Label & Wholesale: https://sumthinblades.com/blog/start-clipper-blade-brand-private-label-wholesale/
- How to Source OEM Clipper Blades from China: https://sumthinblades.com/blog/oem-clipper-blades-sourcing-guide/
- Private Label Razors — How to Start Your Own Razor Brand: https://sumthinblades.com/blog/private-label-razors-start-razor-brand-china/
- Top 10 Hair Clipper Blade Manufacturers in China 2026: https://sumthinblades.com/blog/top-clipper-blade-manufacturers-china-2026/
- How Clipper Blades Are Made — MIM Process [18 Steps]: https://sumthinblades.com/blog/how-clipper-blades-are-made-mim/
- String Trimmer Blade Manufacturing Guide: https://sumthinblades.com/blog/string-trimmer-blade-manufacturing-guide/

### Metal Injection Molding (MIM) & Powder Metallurgy (PM)
- What Is MIM? Metal Injection Molding Explained: https://sumthinblades.com/blog/what-is-mim-metal-injection-molding-guide/
- Metal Injection Molding Applications — 50+ Parts Across 6 Industries: https://sumthinblades.com/blog/metal-injection-molding-applications/
- MIM vs CNC Machining Cost Comparison: https://sumthinblades.com/blog/mim-vs-cnc-machining-cost-comparison/
- MIM vs Die Casting Comparison: https://sumthinblades.com/blog/mim-vs-die-casting-comparison/
- How to Choose a MIM Manufacturer: https://sumthinblades.com/blog/how-to-choose-mim-manufacturer/
- Top 10 MIM Companies & Manufacturers 2026: https://sumthinblades.com/blog/top-metal-injection-molding-companies-2026/
- Powder Metallurgy Process — Complete 7-Step Guide: https://sumthinblades.com/blog/powder-metallurgy-process-complete-guide/
- Custom Powder Metallurgy Parts Manufacturer: https://sumthinblades.com/blog/custom-powder-metallurgy-parts-manufacturer/
- Powder Metallurgy Automotive Applications (30+): https://sumthinblades.com/blog/powder-metallurgy-automotive-applications/
- Sintered Metal Parts — Properties & Applications: https://sumthinblades.com/blog/sintered-metal-parts-guide/
- Sintering Process Explained: https://sumthinblades.com/blog/sintering-process-explained/
- Sintered Metal Filters Guide: https://sumthinblades.com/blog/sintered-metal-filters-guide/
- Sintering Furnace Types Guide: https://sumthinblades.com/blog/sintering-furnace-types-guide/

## Key Pages
- Homepage: https://sumthinblades.com/
- All Products: https://sumthinblades.com/products/
- About Us: https://sumthinblades.com/about/
- OEM & Custom Manufacturing: https://sumthinblades.com/oem-custom/
- Private Label Services: https://sumthinblades.com/private-label/
- Metal Injection Molding: https://sumthinblades.com/metal-injection-molding/
- Blade Compatibility Tool: https://sumthinblades.com/compatibility/
- Clipper Blade Manufacturer: https://sumthinblades.com/clipper-blade-manufacturer/
- FAQ: https://sumthinblades.com/faq/
- Contact / Get a Quote: https://sumthinblades.com/contact/
- Blog Index: https://sumthinblades.com/blog/

## Contact
- Website: https://sumthinblades.com
- Email: sumthin2022@163.com
- Phone: +86-13606732111
- WhatsApp: +86-13606732111
- Location: No. 9-11 Chuangye Road, Yanguan Industrial Park, Haining, Zhejiang, China 314400
- Certifications: ISO 9001, ISO 14001, SGS, National High-Tech Enterprise