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Mingguan Electric

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How to choose qualified system accessories products

It is recommended to choose system accessories products certified by nationally approved certification agencies. The models, specifications and manufacturers of key components and raw materials should be consistent with the certified products. In addition, the specifications, models and technical parameters of all system accessories should match the design of the entire system.

Generally speaking, components require a warranty of at least 20 years, and inverters require a warranty of at least 5 years.

The power generation monitoring data of the distributed photovoltaic grid-connected system and the measurement data of the electric meter are not necessarily the same. If the same power measurement equipment is used at the same grid-connected point and the accuracy is exactly the same, the data obtained should be the same. However, the monitoring equipment used in photovoltaic grid-connected systems is often equipment used by the system construction unit itself, while the meter measurement equipment is often equipment installed by the power department. Therefore, there may be some gaps in the data obtained due to different equipment. The amount of error depends on the specific circumstances. The settlement of electricity bills and subsidy fees is based on the metering equipment installed by the power department.

The first is that the early design plan includes component selection. The second part is the internal layout design and processing technology. The third part is on-site installation and construction. The fourth part is post-operation and maintenance.

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After-Sales Service

Any enquiries will be answered on the same day when we received your phone, fax or email.

We promise:

  1. We have fast, safe and convenient freight forwarding.
  2. Your inquiry will be replied within 24 hours.
  3. We have established a strict quality control framework to control the quality of raw materials and ensure that our products are of good quality.
  4. We were certified to CQC,TUV,CE.


Situation 1

For any quality problems caused by us, we will refund within 20 days after the delivery date. Or we repair or make new ones for buyers upon request. There will be no refunds on used items.

Situation 2

If there is no quality problem, we will not return or refund. If there are any issues that are not caused by us, we will be pleasure to resolve them for the buyer. Buyer is responsible for paying shipping costs to us.

Leave Us A Message

Fill out our quote request form or email yen@ming-guan.com to receive a custom quote from one of our product experts.