April 5, 2024 Mr. Alex Pang,CEO of ‘BTL UK’, famous for ‘Emface’ and ‘EmSculpt Neo’, visited Dong-An Joongsim Clinic. Through this visit, BTL UK designated Dongan Center Clinic as a ‘Korea Research Consulting Hospital’. Mr. Alex Pang shared clinical exchanges with Dr. So-yeon Koo and Dr. Chang-hwan Cho of Dong-An Joongsim Clinic regarding BTL’s treatment equipment, and expressed his hope that BTL UK and Dongan Center Clinic will continue to have active exchanges in the future.

March 15, 2024. Indonesian medical staff visited Dong-An Joongsim Clinic for a seminar hosted by Italian company DEKA, well known for Onda Lifting and Red Touch. On this day, Dr. Chang-hwan Cho of Dong-An Joongsim Clinic gave a lecture and demonstration on the anti-aging treatment program using Onda Lifting. The Indonesian medical staff who participated in the seminar asked various questions about the clinical application of Onda Lifting and showed great interest in the anti-aging treatment program of Dong-An Joongsim Clinic. Dr. Chang-hwan Cho delivered various theoretical and clinical knowledge about Onda Lifting treatment through this seminar lecture and fully demonstrated his side as an expert in lifting, anti-aging, and Dongan treatment regardless of domestic or international.

On Saturday, December 2, 2023, the ' LASEROPTEK Forum 2023' was held at the COEX Intercontinental Hotel Vivace, hosted by LASEROPTEK, a skin beauty and disease treatment laser company. At this ' LASEROPTEK Forum 2023', Dr. Chang-hwan Cho of Dong-An Joongsim Clinic attended as a lecturer and gave a presentation on 'Stress from Pigmentation Treatment and 785PICO: Experience of Using Q and PICO with Various Wavelengths', which drew a lot of positive responses and interest from the medical staff and attendees who participated in the event.[Lecture by Dr. Chang-hwan Cho of Dong-An Joongsim Clinic]Stress from pigment treatment and 785PICO: Experience using Q and PICO of various wavelengths

Lecture by Dr. Chang-hwan Cho of Dong-An Joongsim Clinic at the INTERNATIONAL AESTHETIC CONGRESS OF DEMIRE & PERDAWERI BANTENOn October 22, 2023,Dr. Chang-Hwan Cho of Dong-An joongsim Clinic, participated as a lecturer at the ‘INTERNATIONAL AESTHETIC CONGRESS OF DEMIRE & PERDAWERI BANTEN’ held in Jakarta, Indonesia. Dr. Chang-Hwan Cho gave a lecture on ‘Complaint-Free Acne Scar, Skin Laxity, Striae Treatment With Microscopic Needle-Free Injector: a Comparative Review – Lesser Complications, Better Results than Conventional Treatments’ and received a lot of positive responses and responses from overseas medical professionals who attended the conference.

YSmedi Surfect Launching Promotion EventOn Saturday, October 28, 2023,the Surfect Launching Promotion event hosted by YS Medi was held at the COEX Intercontinental Hotel HL floor, Vivace. At this Surfect Launching Promotion event, Dr. Chang-hwan Cho of Dong-An Joongsim Clinic attended as a lecturer and gave a presentation on ‘4MHz High Frequency Characteristics and Differentiating Points (Why Therfect Choose 4MHz RF?)’, which drew a lot of positive responses and responses from the medical staff who participated in the event.-Why Therfect Choose 4MHz RF?[Lecture by Dr. Chang-hwan Cho of Dong-An Joongsim Clinic]Characteristics and Differentiating Points of 4MHz High Frequency-Why Therfect Choose 4MHz RF?

On Sunday, September 10, 2023, the 2023 Korean Aesthetic Surgery & Laser Society Aesthetic Medical Device Conference and Fall Academic Conference ‘Different Thinking, Different Learning’ was held at Yangjae aT Center Exhibition Halls 1 and 2, World Room, and Creation Room. At this Korean Aesthetic Surgery & Laser Society Fall Academic Conference, Dr. Chang-Hwan Cho of Dong-An Joongsim Clinic fully demonstrated his side as a leading expert in the domestic anti-aging field, and drew a lot of positive responses and responses from domestic and foreign medical professionals who participated in the conference.[Lecture by Dr. Chang-hwan Cho of Dong-An Joongsim Clinic]1. Evidence-based skin regeneration G4PRF-300- The ultimate weapon in acne treatment, skin anti-aging, and freckle treatment2. From skin lifting that can be touched with collagen-selective 675nm red to pigmentation and acne3. Don't be stressed because of fillers. Ophthalmic grade fillers that are safe even for large-capacity, repeated use- Stress experienced by practitioners and solutions when performing hyaluronic acid filler procedures

On Sunday, September 10, 2023, the 2023 Korean Aesthetic Surgery & Laser Society Aesthetic Medical Device Conference and Fall Academic Conference ‘Different Thinking, Different Learning’ was held at Yangjae aT Center Exhibition Halls 1 and 2, World Room, and Creation Room. At this conference, Dr. So-yeon Koo showed her side as a leading expert in domestic obesity treatment and obesity surgery, and drew a lot of positive responses from the medical staff who participated in the conference.[Lecture by Dr. So-yeon Koo of Dong-An Joongsim Clinic] Original HIFEM, clinical experience since its introduction in Korea and tips for increasing effectiveness

On September 1, 2023, Mr. Minh Hoang and Mr. Sumi, CEOs of HANA KOREA, a beauty product distribution company located in Hanoi, Vietnam, visited Dong-An Joongsim Clinic.Through their meeting with Dr. Chang-hwan Cho of Dong-An Joongsim Clinic, Mr. Minh Hoang and Mr. Sumi expressed their hopes for continuous and active exchanges and cooperation.