Wenzhou Xihe Electric Co.,LTD.4000w pure sine wave inverter is tested before shipment and this inspection is completed based on regular QC Evaluation, or depending upon customer requirements. Samples are selected and inspected for flaws at random, according to those criteria and procedures. For all those, Pre-Shipment Inspection is an important measure in the quality management procedure and is the method for checking the quality of Fangpusun 4000w pure sine wave inverter until they're sent.

Fangpusun is a full-service company involving the design, marketing, production, transportation, and technical assistance of mppt solar charge controller. Various in styles, Fangpusun 's our company4000w pure sine wave inverter can meet the needs of different customers. Each our company5a mppt charge controller is built to customer's exact specifications with the finest materials. The product is distinguished by high stability. The paper-like surface of this product provides users with natural and realistic experience, just like writing, signing, and drawing on the real paper. The commercial-grade design makes it suitable for long periods of continuous operation.

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