蓝胶，常绿乔木，生长与热带，温带和寒带地区。欧美地区的蓝胶长而细，一般树高可达20几米，相反非洲地区的蓝胶却短而粗一般只有10米左右，相比两个地区，亚洲的蓝胶树高有15米左右，但日本的蓝胶却明显不同，最高只有1米，粗0.05米粗。
该产品分为蓝胶指示剂、变色硅胶和蓝胶。
The products are divided into blue silica gel indicator, allochroic silica gel and blue silica gel.
直到1960年代初期，这种红白蓝帆布改造的红白蓝胶袋，才广泛运用在日常生活中。
Until early period in 1960s, the red white and blue plastic bags that remodeled from the canvas were becoming widely used in daily life.
特性：电镀蓝胶带是采用PVC薄膜涂特殊亚克力胶水组成，具有耐酸碱、抗腐蚀、清除时不残胶。
Features:PVC film coating special Acrylic glue, Acid&alkali resistance, corrosion resistance, no residue after peeling off.
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