国语自产偷拍精品视频偷,扒开腿挺进湿润的花苞,老师真嫩真紧好爽20P,小太正裸体脱裤子无遮挡

ASTM G154-16是个关于暴露在阳光日晒、持续潮湿、加热而导致产品性能老化的测试方法，现行标准修订于2016年。

1. Scope

1.1 This practice is limited to the basic principles for operating a fluorescent UV lamp and water apparatus; on its own, it does not deliver a specific result.

1.2 It is intended to be used in conjunction with a practice or method that defines specific exposure conditions for an application along with a means to evaluate changes in material properties. This practice is intended to reproduce the weathering effects that occur when materials are exposed to sunlight (either direct or through window glass) and moisture as rain or dew in actual usage. This practice is limited to the procedures for obtaining, measuring, and controlling conditions of exposure.