Many of the raw materials and parts for CSK bikes are imported from Europe. As the cutting, aligning, spray painting, and detail painting are all done by hand, and Chang himself supervises production, he can do his best to ensure high quality in every bicycle.
CSK 單車的原料與零件多從歐洲進口，由於量少質精，車架的裁切、鑄造、龍頭校正、噴漆、彩繪都須專人手工製作，品質上他更親自監督，務求產品水準一致。