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Guangzhou bilian biotechnology Co. Ltd. Copyright 2017 Tel : 020-8659 3346 / 020-8621 1426 Machining Tel : 020-8659 3346 / 020-8621 1426 Customer service QQ : 2355645108 / 2355645106 / 2355645100 Processing and sales Tel : 13751882848 / 13434117696 / 13539740895