TENA Group, the Expert on Safety Glass Who we are? TENA Group Holdings (HK) Co., Ltd, devoted to the industries of safety, fireproof, energy-saving, and environmental friendly nano materials in building over long-term, is a group enterprise composed of 6 subsidiaries, -Guangdong TENA Jiangbo Industrial Development Co.,Ltd -Shanghai TENA Jiangbo Industrial Development Co.,Ltd -Guangzhou TEDUN Doors & Windows Co., Ltd -Jiangxi TENA Jiangbo Industrial Development Co.,Ltd -Nanchang TEDUN Doors & Windows Co., Ltd -Guangzhou TENA Ceramics Co., Ltd What we do? TENA Group has been focusing on R & D, manufacturing, marketing and service of safety, fireproof, energy-saving, and environmental friendly nano materials in building listed below for many years, -Fire-resistant glazing materials in building (insulated fire-resistant nano Si glass, single Na-K fire-resistant glass) -Fire-resistant steel windows, doorsets & partitions (with or without single or insulated fire-resistant glass, fixed or openable type) -Safety & energy-saving glazing materials in building(electric controllable color-changing glass, physically & chemically tempered glass, laminated glass, bullet-resistant glazing, smash-resistant glass, Low-E coated glass, insulating glass unit, nano easy-cleaning glass, colorful glazed glass, etc.)