❶ pvc鑽夊潽鎶ゆ爮鎷愯掑勫備綍瀹夎
1銆佸綋瑙掑害鏄180搴︾殑鏃跺欙紝涔熷氨鏄鎴愪竴鏉＄洿綰胯繘琛屽畨瑁呮椂錛岃繖鏃剁敤騫蟲熅錛屾墍璋撳鉤鏌卞氨鏄鍦ㄧ珛鏌辯浉瀵瑰簲鐨勪袱涓闈涓婃墦榪炴帴浠訛紝鍐嶆妸緗戠墖鐨勬í姊佹彃鍏ヨ繛鎺ヤ歡涓錛岃繖鏍峰畨瑁呭嚭鏉ョ殑鎶ゆ爮灝辨槸鐩寸殑銆
2銆佽掑害鏄90搴︾殑鏃跺欙紝涔熷氨鏄鎷愬集鏄鐩磋掑勶紝榪欐椂鐢ㄨ掓熅錛屾墍璋撹掓熅錛屼篃灝辨槸鍦ㄧ珛鏌辯浉閭葷殑涓や釜闈涓婃墦涓婅繛鎺ヤ歡錛屽湪鎶婃姢鏍忔í姊佹彃鍏ヨ繛鎺ヤ歡涓錛岃繖鏍峰畨瑁呭嚭鏉ョ殑鎶ゆ爮灝辨槸涓涓鐩磋掔殑閫犲瀷銆
3銆佸綋瑙掑害鍦45搴﹁嚦90搴︿箣闂存椂錛岀敤涓囧悜鏌憋紝鎵璋撲竾鍚戞熅灝辨槸榪炴帴浠朵笌涓鑸鐨勪笉涓鏍鳳紝榪欑嶈繛鎺ヤ歡姣旇緝鐏墊椿錛屽乏鍙蟲柟鍚戦兘鍙浠ヨ漿銆