人人观看妻人人澡人人爽,人人观看妻人人澡人人爽,中国一级淫片aaa毛片毛片,精品久久久久久中文字幕乱码,黄片一区二区在线观看,一区二区三区久久国产,免费女女les做爰视频,国偷自产视频一区二区久 ,亚洲av免费网站,亚色中文成人yase999co,中文字幕av无码免费久久,久久精品无码免费不卡,国产黄片免费看久久久,深夜福利国产,国产精品日韩欧美,色综合久久无码中文字幕,伊人亚洲大杳蕉色

The company has successively passed the ISO9001, ISO14001, OHSHS18001 three system certification, China Environmental Label Certification, and after-sales service system certification. The company's products have been insured with the product liability insurance of PICC Property and Casualty Insurance Co., Ltd., and it is a designated inspection unit of the National Quality Supervision and Inspection Center, an AAA unit of Hebei Province that abides by contracts and promises, and a member of the Outdoor Fitness Equipment Technology Alliance. The products currently produced by the company have been inspected and qualified by the National Sports Goods Quality Inspection Center. More than 130 products have obtained NSCC national sports certification, basketball hoops have obtained FIBA certification, and have obtained over 30 national patents (including 1 invention patent). They have also obtained the third level certificate for construction engineering and the AAA level certificate for national construction quality.