China NIL-China NIL

user center

China NIL Research Center for Proficiency Testing

Home > > Download Center > Historical PT schemes

Download Center

: Downloaded:559China NIL Proficiency Testing Schemes （2025）
China NIL Proficiency Testing Schemes （2025）

: Downloaded:1095China NIL Proficiency Testing Schemes (2024)
China NIL Proficiency Testing Schemes (2024)

: Downloaded:3913China NIL Proficiency Testing Schemes (2023)
China NIL Proficiency Testing Schemes (2023)

: Downloaded:4576China NIL Proficiency Testing Schemes (2022)

: Downloaded:4527China NIL Proficiency Testing Schemes (2021)

: Downloaded:4380China NIL Proficiency Testing Schemes (2020)

: Downloaded:4499China NIL Proficiency Testing Schemes (2019)

: Downloaded:4571China NIL Proficiency Testing Schemes (2018)

: Downloaded:4126China NIL Proficiency Testing Schemes (2017)

: Downloaded:4174China NIL Proficiency Testing Schemes (2016)

China NIL Research Center for Proficiency Testing

Address: #13, Gaoliangqiao Xiejie, Haidian District, Beijing

Contacts: Ms. CHEN Jinghua, Ms. YAN Dongxia

Tel: +86 10 6218 1064
E-mail: nil@analysis.org.cn
Website: http://www.nilpt.com

Links