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Choi Kang Chang Ho is a professional installation company specializing in window frames, fire doors, mirrors, various types of glass, reinforced doors, etc., serving Cheonan and Asan in Chungnam and Southern Gyeonggi. ✔ Open 24/7 ✔ Over 10 years of field experience ✔ Reasonable and affordable quotes provided ✔ Free consultation (010-5897-4416) Measurement: On-site visit to verify size and condition Product Selection: Design and function determined after consultation Construction Schedule Coordination: Installation possible within 1–2 weeks Product Manufacturing and Replacement Installation: Performed with precision We pride ourselves on high customer satisfaction through clean installation and honest business practices. 😊 Making Spaces Safer and More Beautiful 📞 Business Inquiries 010-5897-4416 Email: [email protected] #Cheonan #Construction #Windows #Architecture #Interior #Asan #MetropolitanArea #Work #FrontDoor #Building 00:00 Preview 00:19 Today: Replacing Old Sashes 01:35 Emergency Situation 03:15 The Ladder Truck Isn't Coming 05:14 Why Apply Primer 06:17 Actions to Take Before Applying Primer 08:04 Precautions When Applying Primer 09:15 Transporting Sashes 10:22 What is Low-E Glass? 11:04 Precautions for Bottom Leveling and Formwork 15:33 No Correction Needed If Foundation is Well Laid 16:26 Why Accurate Measurements Are Essential 18:15 Checking Locking Mechanisms 19:20 Veranda Sashes Installation 20:26 Finish