国产AV无码国产AV毛片,日韩欧美一区二区三,美韩亚洲激情图视频

Jinan Great Material Co., Ltd. owns two sets of emergent technologies with independent intellectual property rights, which are sophisticated and nationally advanced technology that have undergone the test of industrial mass production. The main products of the company include high index refractive glass bead and long afterglow photoluminescent pigment. The company management team is full aware that “Science and technology are primary productive forces”. They strive to develop new products with research and emerging technologies. For instance, colored glass beads, glow stones are all products embodying our vision and wisdom. Starting a business is a challenging but exciting process. We will always abide by the principle of “Upholding technology, customer first” with an eye to bringing our specialized bringing our specialized knowledge into full play. We will spare no efforts to produce the best products and to repay the society with the best services.