Answer: We have a strict quality management system: including a complete system of production, multi-step and whole process of product quality inspection system, and after-sale and rework system. Quality inspection which we have five steps, first of all the procurement of raw materials for the initial test, and then the production of spare parts produced by the test, followed by the assembly, production workers semi-finished and finished product shape inspection, and then by our The technicians systematically test the products one by one (systematically test the performance, longevity, reliability, safety, economy, appearance quality) of the products to ensure the practicability of the products and the final product warehousing, which is provided by our warehouse Personnel once again check our products, direct access to ensure that the product does not appear in the turnover of quality problems, then re-warehousing.