Sơ đồ điều chế PVC trong công nghiệp hiện nay là :

A.\[{C_2}{H_6}\mathop \to \limits^{C{l_2}} {C_2}{H_5}Cl\mathop \to \limits^{ - HCl} {C_2}{H_3}Cl\;\mathop \to \limits^{{t^o},p,{\kern 1pt} {\kern 1pt} xt} PVC\]

B.\[{C_2}{H_4}\mathop \to \limits^{C{l_2}} {C_2}{H_3}Cl\mathop \to \limits^{{t^o},p,{\kern 1pt} {\kern 1pt} xt} PVC\]

C.\[C{H_4}\;\mathop \to \limits^{{{1500}^o}C} {C_2}{H_2}\mathop \to \limits^{ + {\kern 1pt} HCl} {C_2}{H_3}Cl\mathop \to \limits^{{t^o},p,{\kern 1pt} {\kern 1pt} xt} PVC\]

D.\[{C_2}{H_4}\;\mathop \to \limits^{C{l_2}} {C_2}{H_4}C{l_2}\mathop \to \limits^{ - HCl} {C_2}{H_3}Cl\;\mathop \to \limits^{{t^o},p,{\kern 1pt} {\kern 1pt} xt} PVC\]