Import Brushless Electric Screwdriver Srmd-70 — Buy in wholesale FOB from Supplier in China

The Brushless Electric Screwdriver SRMD-70 from Changshu Donglian Electric Appliance Manufacturing Co., Ltd sits in a higher torque bracket than its stablemate, offering 2.94-6.86 N.m through a brushless DC motor with adjustable torque settings. This places it in the medium-duty assembly range, bridging precision electronics work and construction-related fastening where M6-M10 machine screws or lag-type fasteners are common. The quick-change chuck is designed to accelerate bit swaps on mixed-fastener production lines, reducing non-productive time between operations. At this torque level, the tool typically employs a more robust planetary gearbox and heavier gauge motor windings than lower-torque units, though the exact gear specifications are not provided in the source data. The ergonomic, lightweight housing mentioned in the description suggests a design priority for overhead or extended horizontal use, such as automotive interior assembly or HVAC ductwork installation.

Materials and construction for this class of driver usually involve a glass-filled nylon or magnesium alloy housing to keep weight below 1.5 kg while maintaining drop-test ratings per IEC 60745 or equivalent. The brushless motor controller likely uses three-phase sinusoidal commutation with Hall-effect rotor position sensing, a standard approach for smooth torque delivery and reduced electromagnetic noise. Torque adjustment is typically mechanical via a spring-loaded clutch with detent positions, or electronic through a variable-speed trigger with programmable torque limits; the SRMD-70 source does not clarify which system applies. The 2.94-6.86 N.m range overlaps with cordless impact drivers, but the SRMD-70 is specified as a screwdriver, implying lower peak impact and finer control for threaded fasteners in materials prone to strip-out, such as aluminium castings and thermoplastics. Standard accessories for this segment include belt clips, bit sets, and auxiliary handles for two-handed operation.

Target buyers include automotive assembly plants, metal fabrication shops, and commercial construction contractors who need repeatable torque on structural and semi-structural fasteners. The tool also serves maintenance departments in process industries where pneumatic lines are impractical. Trade benefits referenced in the listing include flexible MOQ, FOB and CIF shipping options, and mention of ISO and CE compliance, though specific certificate numbers or scopes are not provided. Buyers should treat these claims as starting points for verification rather than assured facts. Changshu Donglian's Harbor trust tier and zero recorded response rate mean that direct communication is essential to confirm production capacity, warranty terms, and whether the SRMD-70 is stocked or built to order.

Changshu Donglian Electric Appliance Manufacturing Co., Ltd maintains its registered address in Dalian, Liaoning, China, postal code 116000, the same location listed for the SRMD-12 product. The supplier carries a Harbor trust tier classification, which represents an entry-level verified status on the marketplace, yet the response rate remains at 0.00 percent with zero average response hours recorded. This pattern indicates that marketplace engagement metrics are either not yet populated or not synchronised for this account. The company promotes both the SRMD-12 and SRMD-70 models, suggesting a product-line approach to brushless electric screwdrivers rather than single-SKU trading.

No information is provided in the source about factory floor area, number of production lines, engineering staff, annual turnover, or named domestic or international clients. ISO and CE compliance are referenced in the product description for the SRMD-70, but certificate numbers, issuing bodies, and audit dates are absent. Buyers should request a supplier capability assessment, including quality management system documentation, in-process inspection records, and a factory profile with photographs of production and testing areas. The lack of response history means that initial contact may require follow-up through multiple channels to secure a quotation.