Maintenance department: maintenance industries circuit boards, machine equipment system, main board, controller, power supply, frequency converter, PLC and touch screen.

维修部：维修各行业电路板，机加工设备系统，主板，控制器，电源，变频器，PLC触摸屏等。

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During the design of hardware circuits and printed circuit board, we take a series of measures to design the reliability of the system.

在硬件电路设计和印刷电路板设计过程中，采取一系列措施对系统进行了可靠性设计。

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Circuit board, semiconductor device mfg. method, and electroplating system.

电路板，半导体装置制造方法，及电镀系统。

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As communicated in the July 30 Franchise Weekly Update , a hacker claims to have compromised the Onity brand guestroom lock system with a device containing a circuit board with several wires attached.

FORBES: Lock Firm Onity Starts To Shell Out For Security Fixes To Hotels' Hackable Locks

Chrysler found cracks in a circuit board that turns the four-wheel-drive system on and off.

WSJ: Chrysler Recalls Thousands of Jeeps