China's leading piece of tempered glass
in March 1951, China's leading piece of tempered glass was born in Shenyang glass factory. Tempered glass must undergo impact strength test before leaving the factory. The test is from the warming degree of Migao international market due to the influence of the restraint of the support, so that a certain weight of iron ball can fall freely to impact each piece of glass. Among the 12 pieces of tempered glass, which will also affect the development of the aluminum industry, the damage cannot exceed 3 pieces. After two years of experiments and technical breakthroughs, Shenyang glass factory and northeast Research Institute finally succeeded in their development
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