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About US

Longmax was founded in 1994 and has grown to be one of the leading Electronic Contract Manufacturer in Hong Kong .
Longmax provides full turnkey of Electronic Manufacturing Services serving the fast-growing market. We provides integrated approach to manufacturing that enable the company to exercise greater control in quality, delivery and cost. Customers benefits from Longmax's value added services ranging from design to circuit-fabrication, final system assemblies, testing, packaging, warehousing and distribution.


  • 23-Mar-2018

    For the third year in succession Longmax wins the BEST PARTNERSHIP EXCELLENCE AWARD that presented by Invue.

  • 27-Mar-2017

    Longmax once again wins the Year of 2016 BEST PARTNERSHIP EXCELLENCE AWARD that presented by InVue.

  • 20-Mar-2017

    Since 27-Mar-2017 Longmax Hong Kong office will be relocated to the Kwong Sang Hong Centre in Kwun Tong.

  • 13-Mar-2017

    Longmax has added the X-ray detection machine and BGA rework station at the SMT room. Longmax is fully capable to produce products with BGA components.

  • 18-Mar-2016

    Longmax wins the Year of 2015 GOLD PARTNERSHIP EXCELLENCE AWARD that presented by InVue Security Products, Inc.

  • 01-Feb-2013

    Longmax was approved the QSA & SER audit by The Home Depot.

  • 01-NOV-2012

    Longmax has added a new SMT line at the new factory, it equips with iCON automatic screen printer, Yamaha compact high-speed/flexible SMT modular, Heller hot air reflow oven & Shindenshi AOI.

  • 15-Oct-2012

    Longamx has added Haitian PL5300/4000j-A injection machine at the new factory. The new machine clamping force is up to 5,300 kN which improves Longmax's capability in molding large plastic parts.

  • 30-Sep-2012

    Longmax factory has been relocated to Baishigang 3rd Industrial Zone Changping Town since Sep-2012. The new factory location has more than 10,000 sq meters which is more than double sized to the original location.