promotion [no increase in quantity]](促销【加量不加价】)

buy 20 get 4 free (24 mixed hair)(拍20送4发（24混发）) buy 30 get 6 free (36 mixed hair)(拍30送6发（36混发）) buy 20 and get 4 free (8 black +8 khaki +8 beige)(拍20送4发（8黑＋8卡其＋8米白）) buy 20 and get 4 free (8 black +8 dark coffee +8 light coffee)(拍20送4发（8黑＋8深咖＋8浅咖）) buy 10 get 2 free (12 mixed hair)(拍10送2发（12混发）) buy 10 get 2 free (12 black)(拍10送2发（12黑）) buy 10 get 2 free (12 deep coffee)(拍10送2发（12深咖）) buy 10 get 2 free (12 light coffee)(拍10送2发（12浅咖）) buy 10 get 2 free (12 khaki)(拍10送2发（12卡其）) buy 10 get 2 free (12 beige)(拍10送2发（12米白）) buy 10 get 2 free (6 black +6 dark coffee)(拍10送2发（6黑＋6深咖）) buy 10 get 2 free (6 black +6 light coffee)(拍10送2发（6黑＋6浅咖）) buy 10 get 2 free (6 black +6 khaki)(拍10送2发（6黑＋6卡其）) buy 10 get 2 free (6 black +6 beige)(拍10送2发（6黑＋6米白）) buy 10 get 2 free (6 black +6 mixed hair)(拍10送2发（6黑＋6混发）) buy 10 get 2 free (4 black +4 dark coffee +4 light coffee)(拍10送2发（4黑＋4深咖＋4浅咖）) buy 10 get 2 free (4 black +4 khaki +4 beige)(拍10送2发（4黑＋4卡其＋4米白）) buy 20 get 4 free (24 black)(拍20送4发（24黑）) buy 20 and get 4 free (24 deep coffee)(拍20送4发（24深咖）) buy 20 and get 4 free (24 light coffee)(拍20送4发（24浅咖）) buy 20 get 4 free (24 khaki)(拍20送4发（24卡其）) buy 20 get 4 free (24 beige)(拍20送4发（24米白）) buy 20 and get 4 free (12 black +12 dark coffee)(拍20送4发（12黑＋12深咖）) buy 20 get 4 free (12 black +12 light coffee)(拍20送4发（12黑＋12浅咖）) buy 20 get 4 free (12 black +12 khaki)(拍20送4发（12黑＋12卡其）) buy 20 get 4 free (12 black +12 beige)(拍20送4发（12黑＋12米白）) buy 20 get 4 free (12 black +12 mixed hair)(拍20送4发（12黑＋12混发）) buy 30 get 6 free (36 black)(拍30送6发（36黑）) buy 30 get 6 free (36 deep coffee)(拍30送6发（36深咖）) buy 30 get 6 free (36 light coffee)(拍30送6发（36浅咖）) buy 30 get 6 free (36 khaki)(拍30送6发（36卡其）) buy 30 get 6 free (36 beige)(拍30送6发（36米白）) buy 30 get 6 free (18 black +18 light coffee)(拍30送6发（18黑＋18浅咖）) buy 30 get 6 free (18 black +18 khaki)(拍30送6发（18黑＋18卡其）) buy 30 get 6 free (18 black +18 dark coffee)(拍30送6发（18黑＋18深咖）) buy 30 get 6 free (18 black +18 beige)(拍30送6发（18黑＋18米白）) buy 30 get 6 free (18 black +18 mixed hair)(拍30送6发（18黑＋18混发）) buy 30 and get 6 free (12 black +12 dark coffee +12 light coffee)(拍30送6发（12黑＋12深咖＋12浅咖）) buy 30 get 6 free (12 black +12 khaki +12 beige)(拍30送6发（12黑＋12卡其＋12米白）) buy 5 get 1 free (6 black)(拍5送1发（6黑）) buy one and don't get one free/mixed one(拍一不送/混发一个款) buy two, no free/mixed delivery of two models(拍二不送/混发二个款)