好疼太大了太粗太长了视频丨男女做爽爽爽网站丨久久国产成人精品国产成人亚洲丨折磨小男生性器羞耻的故事丨国产成人一区二区精品视频丨2021最新国产在线人成丨二区三区丨狠狠躁夜夜躁人人爽天天天天丨国产精品swag丨欧美成人二区丨长河落日电视连续剧免费观看01丨精品九九九九九丨丁香六月综合激情丨大香伊在人线免97丨天天干伊人丨亚洲成av人片在www鸭子丨久久精品欧美日韩丨免费不卡毛片丨亚洲天堂网一区二区丨亚洲一区91

25-year production experience

Quality Control

Let the customer be satisfied!


YWY pays great attention to pre-sale, sale and after-sale service. For us, we manage to do “knowing yourself and knowing your enemy”, and in the meanwhile let the customer learn before doing, so that to make the customer carefree and satisfactory. We have set offices in Shanghai, Changzhou, Beijing, Wuhan, Xi’an, Guangzhou, Chongqing in order to provide excellent products and service efficiently and at any time to our customers.

zlt.jpg


1600850540705721.jpg

1600850570109119.jpg

1600850686318994.jpg

1600850659262795.jpg

zlzp.jpg


1599556976166489.png


YWY has a complete quality control and testing system, including a testing laboratory center, which consists of a non-destructive testing room, a performance room, a material room, a chemistry room, a testing room and a testing base. The testing center and testing base do research, testing, measurement and processes 176 sets of equipment. The testing center can conduct metal material composition analysis, mechanical performance analysis, and microstructure testing; test and evaluate bearing noise, sealing, vibration, friction torque and other items; check the bearing's dimensional tolerance, shape tolerance, position accuracy, and surface roughness Inspection: The internationally advanced full-digital ultrasonic flaw detector and high-resolution fluorescent magnetic particle flaw detection equipment are used for non-destructive flaw detection of bearings.