Sigulda's Primary school No. 1., address: Sigulda, Pulkveža Brieža street 105, Sigulda, Siguldas municipality, tel: +371 26 169 931, email: edite.kuzmina@gmail.com - Edīte Kuzmina

UAT Myanmar, address: No.2, Mya Sabai Lane, Ward 8, Parami Avenue, Yankin Township, Yangon, Myanmar, tel: +9592026592, email: soesandar1975@gmail.com - Soe Sandar

ELPC Olympiads Uzbekistan LLC, Address: 13 A - Abay street, Shaykhantahur district, Tashkent city, Uzbekistan, 100128, tel: +998 88 6200030, email: bakhtiyor.islombekov@gmail.com - Bakhtiyor Islombekov

Bruin Learning, address: Metro Broadway A55 Pantai Indah Kapuk Jakarta Utara, 14460, tel: +62 818183448, email: bruinlearning.id@gmail.com - Juliana Tanjo

UniCEP - Universal Competition of Educational Poster, address: Tynystanov 28, Karakol, tel: +996708677597, email: unicep.center@gmail.com - Mustafa Ozdemir

Mathematics Olympics Training League Incorporated (MOTLI), address: Kidapawan City Philippines 9400, tel: +63 966 142 7148, email: bingdanis12@hotmail.com - James Kelvin U. Fordan

St Marks International school, address: Soi 52 Rama 9 road, Suanluang Bangkok Thailand 10250, tel: +66945934221, email: bingdanis12@hotmail.com – Robert Fordan

PS Education Pte Ltd, address: 51 Goldhill Plaza #08-02 S308900, Singapore, tel: +6596736673, email: people.asia@gmail.com – Sarah Ho

St Marks International school, address: Soi 52 Rama 9 road, Suanluang Bangkok Thailand 10250, tel: +66945934221, email: bingdanis12@hotmail.com – Robert Fordan

Dewey International Co.,LTD, address: Battambang Province, Cambodia Building #16-17-18, Road#1, Kampong Krabei Village Sangkat Svay Por,Battambang City, tel: +855 12 501 119, email: keo.chamnan@diu.edu.kh - Keo Chamnan

QL School, address: 42/2A, street Orfeusza, Osowa, Gdansk, Poland, tel: +48511983665, email: sekretariat@qlschool.pl - Karolina Gac

JAVONI INNOVATION LYCEUM LLC. address: 735700, Republic of Tajikistan , Sogd region, Khujand city, Ismoili Somoni value, 19 district. Tel: +992 92 766 9966 Email: mtiv-sugd@mail.ru - Firdavs Bahrami

Qatar Charity (Infinit Center, Address: Street Abdyl Frasheri no.39 Prishtina, Kosova 10000, Tel: +38345881100 / +377744584303, E-Mail: info@infinitcenter.com - Dardan Maraj and Ilire Raifi

THE CHALK n TALK EDUVENTURES, 31/40 - PANCHSHEEL NAGAR, CIVIL LINES, NEAR GAURAV PATH, RAIPUR - CHHATTISGARH, INDIA PIN NO - 492001, TEL: +91-8269711448, EMAIL: chalkntalk.india@gmail.com - TINNA BHAMBHWANI

Emeral International School Dhaka, Address: Road 6, House 19/1, Dhanmondi, Dhaka- 1205, Bangladesh, Tel: +880 1676-221009, email: sanjanasiddiqui@gmail.com - Sanjana Siddiqui

Global Olympiad Center, Address: Baku city, Nasimi region Nizami street 203, f7, Azerbaijan, Tel: +994 50 224 51 40 / +994 998 88 79 99, email: khayal.ibrahimzada@globalolympiccenter.org - Khayal İbrahimzade

The Kingdom of English - MARMAG LLC , Address: Baghramyan Avenue 2 nd dead block 10,Yerevan, Armenia 0019, Tel: +37477801754, email: hippoinfo-arm@mail.ru - Hermine Melkonyan

INSTITUTE OF OLYMPIADS, SRI LANKA, Address: No: 124/1/1, Hokandara Road, Thalawathugoda, Colombo, Sri Lanka, Tel: +94 77 156 9266 / +94 71 92 10001, email: nawarathneps@olympiad.lk - Priyantha Nawarathne

Özgür Eğitim ve Sınav Hizmetleri Ltd. Şti., Address: Atakent Mah. Dicle Cad. Alparslan Sitesi 1.Blok B Girişi 3/E Ümraniye / İSTANBUL, Tel: +90532 2250483, email: ozguregitim@gmail.com - Özgür Özdemir