In order to improve corporate visibility and establish corporate image, Shenzhen Chengyisheng Electronics Co., Ltd. adheres to the principle of "pursuing high quality and customer satisfaction" and the principle of "preferential price, considerate service and reliable product quality". Solemnly promise to you:

● Commitment to product quality
All products are manufactured and inspected with quality inspections and agency inspection reports. We sincerely invite users to inspect the entire process and performance of the products in person and wait for the products to be qualified before packing and shipping.

●Product price commitment:

In order to ensure the high reliability and stability of the product, our company will provide you with a good price at a favorable price on the basis of not reducing the technical performance of the product and changing the product parts.

● Delivery cycle commitment:

As far as possible according to user requirements, if there are special requirements that need to be completed in advance, our company can specially organize production and installation to strive to meet user needs.

● After-sales service commitment:

Fast, decisive, accurate, thoughtful and thorough, the quality of service has won customer satisfaction; the product warranty period is twelve months, during the warranty period, the supplier will repair and replace parts damaged due to quality reasons free of charge, parts outside the warranty period For the damage, the accessories provided are only charged for the cost. The equipment damage caused by the demand side human factors, the repair or the accessories provided by the supplier are all calculated at the cost price.