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Vietnamese technology manufacturer and distributor operating the OSUNO brand across smart locks, motorcycle technology, GPS devices, electrical and electronic products, OEM manufacturing, and sporting goods.

Smart LocksElectronics ManufacturingMotorcycle TechnologyOEM ManufacturingSmart Home+5

About Us

Long Tien Hai Technology Development Company Limited operates the OSUNO brand. The company manufactures, imports, distributes, and exports smart locks, hotel locks, safes, smart-home products, motorcycle GPS and electronic control products, batteries, energy-saving switches, LED lighting, electrical control cabinets, electronic circuits and components, and other electrical and electronic products. It also provides mechanical processing, plastic injection molding, custom mold development, and OEM manufacturing. The company profile identifies two factories, nationwide branches and showrooms, and the OSUNO Sport product line.

Approximately 200

Employees

Manufacturing Facilities

23,000 m²

Combined Factory Area

4,000+

Dealer & Distributor Network

1,000+

Smart Lock Projects

200+

Partners

Main Products

View all products

Electronic, Smart and Hotel Locks

Electronic locks, hotel locks, safes and access-control products.

Min. Order: Retail or project order

Smart LockHotel Lock+1

Electrical Control Cabinets for Export

Electrical cabinets and electronic products for export markets.

Min. Order: Project-based

Control CabinetExport+1

Electronic Circuits and Components

Circuit-board, wiring and electronic-component manufacturing.

Min. Order: Project-based

PCBElectronic Components+1

Certificates

ISO 9001:2015 Quality Management System

Verified certificate

EI70 Fire Resistance Standard for Electronic Door Locks

Verified certificate

USAPA Competition Standard for OSUNO SPORT Pickleball Products

Verified certificate

Why Choose TNG Garment?

Quality Assurance

Strict quality control from raw materials to final products.

On-time Delivery

Strong production capacity ensures timely delivery.

OEM & ODM Service

Flexible customization to meet brand requirements.

Competitive Pricing

Factory-direct pricing with consistent quality.

Our Capabilities

Production Capacity

Factory Size

Hanoi factory: 3,000 m²; Tho Xuan, Thanh Hoa factory: 20,000 m²

Production Lines

SMT assembly, welding, pressing, CNC machining, plastic injection molding, electronic-circuit production, electrical-cabinet production, lock assembly, and customized mold development

Main Materials

Electronic components, printed circuit boards, steel, stainless steel, aluminum, die-cast metals, and engineering plastics

Main Markets

Vietnam, USA, Laos, and the Philippines

OEM/ODM

OEM manufacturing and customized product and mold development according to customer specifications

Sample Lead Time

Bulk Production Lead Time