OEM/ODM Manual Tools for Electronics from China Factory

BOSI Tools is a manual tools for electronics supplier from China, offering a product range that includes carbon steel precision sprue pliers, high-end temperature-adjustable hot air gun, 38-piece mobile phone repair kit, and 60-piece multi-functional repair kit.

From precision bits made of S2 steel to imported Mabuchi motors, from aerospace aluminum alloy handles to high-frequency quenched jaws—BOSI provides professional-grade tool solutions for electronics repair, mobile phone disassembly and assembly, advertising production, and laboratory work through precision manufacturing and reliable configurations.

Different working conditions have varying tool requirements. Please feel free to contact us to obtain a customized selection solution.

Working Principle

The working principle of manual tools for electronics varies by category, but the core revolves around precision operation.

The carbon steel precision sprue pliers utilize the lever principle to drive jaw closure. The jaws, having undergone high-frequency quenching, concentrate hardness, and the aligned upper and lower cutting edges exert strong shear stress on plastic burrs or non-ferrous metal wires. Three specifications, 5", 6", and 7", can cut copper wire from Φ1.8mm to Φ2.6mm respectively.

The high-end temperature-adjustable hot air gun operates with a 2000W power rating driving an imported Mabuchi motor, which spins a fan to blow air across a first-grade iron-cast heating element. Two fan speed settings, combined with a temperature control range of 100°C to 650°C and an air output of 250–500L/min, are used for shrinking PVC film, softening welding materials, or removing paint and adhesive. The 20-second delayed shutdown function continues to blow air to cool the heating core after power-off, extending service life.

The functional basis of the 38-piece mobile phone repair kit and the 60-piece multi-functional repair kit lies in the pairing of precision screwdriver bits and handles.

The bits are made from Cr-V or imported S2 steel with integral heat treatment. The handles are constructed from aerospace-grade aluminum alloy, with a rotatable head design for operation in confined spaces.

Magnetic and flexible extension shafts can be combined to reach irregularly positioned screws, transmitting rotational torque to complete the removal and installation of miniature screws.

How to Choose the Right Electronic Tools?

Selection is based on the precision required for the repair object and the breadth of tool coverage.

For simply trimming electronic component pins and plastic burrs, Carbon steel precision sprue pliers suffice. When heat shrinking, solder removal, or adhesive removal is involved, the temperature control and airflow adjustment of a hot air gun are crucial.

For repairing precision digital products like phones and tablets, the 38-piece set specializes in miniature irregular screws.

For comprehensive repair of home appliances, PCs, and drones, the 60-piece set, with its S2 bits and aluminum alloy handle, provides more comprehensive specification coverage.

Common Problems and Solutions

What Materials Can Be Processed?

BOSI manual tools for electronics cover a variety of materials and scenarios in electronic repair and precision work:

Non-Ferrous Metal Wire and Plastic Parts

Carbon steel precision sprue pliers, 5"–7", can cut Φ1.8–2.6mm copper wire, aluminum wire, and plastic part burrs.

Primary applications include electronic component pins, model plastic sprues, and through-hole leads on printed circuit boards.

Heat Shrink Materials and Adhesives

The High-end temperature-adjustable hot air gun, adjustable from 100°C to 650°C, is suitable for PVC heat shrink tubing, double-wall tubing, heating solder paste, and softening hot melt adhesive.

An air volume of 250–500L/min covers everything from precise spot heating for small components to paint removal on medium-sized areas.

Miniature Screws and Fasteners

The 38-piece mobile phone repair kit covers Phillips, slotted, pentalobe, triangle, Torx, Y-type, and precision sockets, fitting miniature screws in mainstream brands like Apple, Samsung, and HTC, as well as watches and laptops.

Home Appliance and General Repair Fasteners

The 60-piece multi-functional repair kit uses S2 bits paired with a 4mm series socket and extension shafts, including a dedicated bit for Bull brand sockets, a PH2 high-torque Phillips bit, and more, suitable for medium-sized equipment like home appliances, PCs, and drones.

Electronic Components and Wiring

Stainless steel tweezers and the dual-color anti-slip elastic handle screwdriver are used for gripping small components and bending wire ends.

The flexible extension shaft can reach deep into a chassis to transmit torque while avoiding obstacles.

Safety Precautions for Use

Hot Air Gun Operation

The nozzle temperature can reach up to 650°C during use; never point it at people or flammable materials.

After turning the tool off, it will continue to blow air for 20 seconds to cool the heating core. During this time, do not unplug the power or place it in a toolbox; wait until it has completely shut down and cooled before storing.

The heating core is not covered under warranty, so avoid prolonged full-load dry burning.

Carbon Steel Precision Sprue Pliers Usage

Wear safety goggles when cutting, as copper leads or plastic burrs may fly off upon severing.

Strictly prohibited from cutting iron-based materials or wire exceeding the rated specifications; over-spec cutting will cause permanent chipping of the cutting edge.

The insulation on the plier handles does not provide protection against electric shock; never use on live circuits.

Micro Bits and Screws

During phone and computer repair, the bit model must perfectly match the screw recess; any deviation in precision can strip the screw and render it unusable.

Precision screws require low tightening torque; apply only light finger force to avoid snapping the screw post or damaging the bit coating.

Sockets and Extension Shafts

When using sockets with extension shafts in the 60-piece set, ensure the square drive is fully seated.

After attaching a bit to the magnetic extension shaft, pull lightly to confirm it is secure before inserting into the device housing, to prevent the bit from falling into the equipment interior.

Storage Environment

Ensure the High-end temperature-adjustable hot air gun is completely cool before storage. Keep bit-type tools dry and apply a thin layer of anti-rust oil.

Regularly wipe metal debris from the cutting edges of Carbon steel precision sprue pliers. Keep all electronic tools away from environments that are both damp and hot.