Yongyeon Industrial Co., Ltd. is introducing system windows of one of the top three global window companies, Germany's Baltic (brand "BALTIC"), to Korea in order to meet the demand of the domestic window market for high-quality system windows. It is manufacturing aluminum horizontal system windows (AL175 P/S, AL75 T/T/T) and system doors, including Tilt&Turn, Double Tilt&Turn, Project Window, Casement Window and uPVC system door, European horizontal close-contact sliding window (P/S BT-220 47mm, 24mm), Elevation split window (P/S HT-220 47mm), and aluminum horizontal close-contact system window (AL175 P/S, AL75 T/T) and system door with BALTIC 82 Softline made of high-quality uPVC material.

The system window of Baltic (brand 'BALTIC' in Germany is a world-class window that can be stably maintained despite climatic characteristics such as strong wind pressure and frequent storms in northern Germany over the past 40 years, and is highly recognized as a brand. The profile on which the system window is based is consistent with the performance of DIN EN 12608's highest quality A in Europe, and maintains the original quality of Baltic with its window design of various surfaces, colors, and shapes. In addition, the hardware applied with titanium-AF-fitting technology and harsh durability tests adds reliability as the best system window. BALTIC also has a high-stability A-grade profile characteristic and a design with increased energy savings due to the thickness of the outer wall (3mm, tolerance ±0, 2mm), and triple glass (82mm) 'SOFTLINE 82' with excellent insulation properties is applied. SOFTLINE 82 is a system that can effectively reduce heating costs regardless of the season by combining an 82mm-deep multi-chamber blocking technology and a high-efficiency intermediate blocking system. The heat flow rate is 0.735W/㎡K, which has the first grade of performance and airtightness. In addition, Baltic has increased insulation, airtightness, and safety through window handles of various grips, high-end packing for safety, reinforced burial devices, and convenient accounting and tilting design integrated with anti-closing functions.

The system hardware installed inside the horizontal sliding window (PS BT-220 47mm, 24mm) window was designed in a sliding manner that allows about 8mm of clearance in the horizontal (indoor/outdoor) direction. Ventilation is possible in the closed state, and it is characterized by high heat, high confidentiality, high watertightness and crime prevention performance. In the test test conducted by the national certification authority, the monchang product obtained a heat flow rate of 0.656W/㎡·K grade 1 and a confidentiality grade 1 grade 1 grade for 47mm, and in the case of 24mm, it received a heat flow rate of 0.977W/㎡·K grade 2 and a confidentiality grade 1 grade high insulation performance. The standing split window (PS BT-220 47mm) also showed excellent insulation performance while obtaining a heat flow rate of 0.774W/㎡·K grade 1 and airtightness grade 1. 

System doors, a uPVC family, can be designed and manufactured to open and close the outside, inside, or all, and electronic keys can be installed. Even though it is a door, it has a first-class insulation performance of 0.769W/㎡K and a high level of airtightness.

The AL product is a horizontal adhesion system window (AL 175 P/S), and a special profile was used to remove the gap between the window frame and glass, which is a disadvantage of general windows. Through this, durability was increased through anti-vibration design as well as airtightness, watertightness, insulation, sound insulation, and wind resistance. It is in high demand in residential and commercial complexes, hotels, resorts, and officetels because the windows are soft to open and close by installing dampers and the use of heat-blocking insulation (polyamide) prevents condensation.