Custom High-grade Metal Business Cards

Company Name	Dongguan Tongjin Electrical Appliance Technology Co.,Ltd
Certification	ISO9001:2015 ; IATF16949:2016
On-time delivery rate	100.0%
Supply Ability	100000 Pieces per Month
Response time	≤4h
Floorspace	20000m²
Staff	235
Quality control	Raw-material traceability identification; Finished product inspection

PRECISION FORMING	We provide manual and semi-automatic precision forming using standard, modular and custom form tools. Additionally, we offer in-house spot welding for formed, 3-D components that require a permanent connection.
ELECTROPOLISHING & PASSIVATION	We offer both passivation and electropolishing to enhance component corrosion protection. Passivation purifies the component surface and forms a protective metal oxide coating, preserving the base metals integrity without altering its dimensions or appearance. Electropolishing, on the other hand, produces a brighter and smoother surface finish, reducing roughness by up to 50% and providing up to 30 times more corrosion resistance than passivation.
Heat treatment	We offer several heat treatment options such as hardening, tempering, annealing and normalising for components that require increased surface hardness, temperature resistance, ductility or strength.
surface finishing	We provide a range of surface finishing options to improve component form and function, these include: Anodising, Electroplating, Chemical blacking, PVD, painting.
DIFFUSION BONDING & BRAZING	Our diffusion bonding and brazing services cater to the needs of two more components requiring a strong bond. Brazing offers versatility in joining dissimilar metals and complex geometries using a brazing foil, while diffusion bonding creates a homogenous structure that withstands mechanical stresses, vibrations and thermal cycling.
WIRE ELECTRO DISCHARGE MACHINING (WEDM)	Wire electro-discharge machining, also known as spark erosion, is a technique that utilises electric current and fine wire to cut conductive materials with low residual stress. By combining WEDM with etching, we can achieve component profiles cut to tighter tolerances with ±0.005mm accuracy.

☑Material: Stainless steel, Aluminum Alloy
☑Surface treatment: PVD Coated
☑ Place of Origin: Guangdong,China
☑Lead Time: 7-15 working days
☑ Delivery Time:3-5 days
☑Hole size: Diamond,square,round
☑Color:Silver,gray, Black, Flash Color
☑Factory experience:21 years

☑Maximum sample order quantity: 10 piece
☑ Sample price: $100.00/piece
☑Customized logo
☑Customized packaging
☑Graphic customization
☑ Design-based customization
☑Sample-based customization