It is hardly deniable that the discovery of the unique metallic features of ALUMINIUM has found impact on numerous manufacturing industries of uncountable numbers. Grabbing hold the wisdom of employing aluminium has become one of the keys to success in refining many industrial, domestic and constructional products. Whilst practice makes perfect, experience makes precision in this field. Tianjin Tandem Bicycle Components Co., Ltd .is located in Tianjin Dagang District economic development zon...