8. Quality assuranceThe bearing supplier shall be responsible for product quality; under the condition of normal preservation and accurate installation. Warranty is conformed to the Gearbox warranty. If this is not the case, a specified agreement must be agreed and signed by Envision. If the products have any problem during lifetime, the bearing supplier shall timely cooperate with and guide the Envision to solve practical problems; in case of the intrinsic quality problems of product parts, the bearing supplier shall replace the parts free of charge and also bear the corresponding quality responsibility. The products provided by the bearing supplier shall meet all the requirements specified in this Standard, the supplier shall ensure the bearing products being free from any defect in the aspects of design, material, parts, process, manufacture, etc.