Constituting strict quality control procedure, the company is certified by Quality Standard ISO9001:2000 and Safety Norm UL. Upon this precondition, our quality has a good lead over our competitor's always, reaches the quality level of developed countries and is accepted by famous domestic and foreign enterprises. With years experience in quality control, over 20 QC staffs check in each procedure separately to monitor the product strictly. Holding Quality Training periodically, we build up a common understanding "Always keep Yiqiang in my mind and quality under control" . 90% parts are manufactured by ourselves, no matter piezo ceramics, plastic injection or metal item processing, then we control much better quality of parts and guarantee the production. Besides, we set up QC points from raw material to finished goods to check step by step and solve the quality problem and potential quality problem at the beginning. We always pursue our quality target "basing on quality to satisfy the customers, persisting improvement and striving for top domestic level".