男插女视频,91丝袜呻吟高潮美腿,国产激情美女久久久久久吹潮

寧波科誠儀器有限公司,主營產品:色差儀,分光測色儀,臺式分光測色儀,光澤度計,對色燈箱,管道泄漏查漏儀,鹽霧試驗機,矽鋼片鐵損測量儀,材料拉力試驗機,光譜儀,影像儀投影儀,三坐標,粗糙度儀,漆包線檢測儀器,激光測徑儀,測厚儀,探傷儀,推拉力計,扭矩測試儀,彈簧拉壓試驗機,金相實驗設備,硬度計等。一.色彩類檢測:彩譜：色差儀DS-200/210/220/400/410/420；便攜式分光測色儀:DS-60/62/64,DS-600/620/660,DS-700A/D/E,DS-23D/25D/26D,DS-700C-1/-2/-3,DS-826/528/530,EX-SE/PRO/MAX；臺式分光測色儀:CS-820P/821N/826,DS-36D/37D/39D,DS-812N/816N；光澤度計:CS-300/CS-380/CS-300S；霧度計透過率DH-10/12/13,TH-09...