So as to give the highest quality after-sales service, Shenzhen Coolmay Technology Co., Ltd. comes with an after-sales service section to give consulting services on all small plc related troubles. To be able to take advantage of our clients' opinions, we'll convey the information supplied from the after-sales service section and reveal it in our future solutions. By combining our clients' opinions, we're dedicated to giving the maximum degree of satisfaction.

Coolmay engages in the production of VFD/ Inverter, including plc hmi. Coolmay focuses on providing a variety of plc manufacturers for customers. Coolmay VFD/ Inverter is strictly checked. The inspections include abnormal operation ( faults and failures within the product) and the safety of the circuitry. The PLC HMI All in one can be widely used in industrial and civil automation fields. PLC has features like programmable logic controller, and specially has the merit of programmable logic controller. The power supply module has the functions of short circuit and overload protection.

We always adhere to the principle of 'quality first'. Good quality products will help us win more customer. Hence, we will conduct specialized education and technical training to the workers, and work together to improve product quality.