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GreensTone offers a full turnkey contract manufacturing service with its strategic partners including PCB manufacturing, PCB components procurement, PCBA (Printed Circuit Board Assembly) manufacturing service and provide molding service with plastic and metal parts as a value-add service. Mainly focused on EMS (Electronics Manufacturing Service) integrated manufacturing and assembly.

What is FR4? FR4 is the name of a type of epoxy glazing material. fr stands for flame retardant. 4 refers to the factors that differentiate it from other materials. FR4 means two things. The material. As a construction material, it refers to epoxy laminates reinforced with glass fibers. Used to make FR4 boards.

Evaluation. China fr4 pcb assembly is also a unit of evaluation. Epoxy laminates are classified. This classification shows the basic quality of the epoxy resin board.

GreensTone Electronics employs a dedicated, parts sourcing and procurement team to manage the logistics and procurement of PCB assembly components using a quality-controlled and time tested sourcing system that guarantees faultless electronic parts sourcing so our printed circuit board assembly services can be offered to our clients at the lowest cost in the global electronic contract manufacturing industry.

Wheel hub motor technology is also called in-wheel motor technology. Wheel hub motor is the motor embedded in the wheel, the stator is fixed on the tire, the rotor is fixed on the axle, and the stator and rotor move relative to each other when power is applied. The electronic phase converter (switch circuit) controls the energization sequence and time of the stator windings according to the position sensor signal, generates a rotating magnetic field, and drives the rotor to rotate. Its biggest feature is that the power, transmission and braking devices are integrated into the wheel hub, thus greatly simplifying the mechanical part of the electric vehicle.