activity countdown: 00:03:26 only 18 copies left(活动倒计时00：03：26仅剩18份)

single layer coarse sand (10 green +10 yellow)(单层粗砂款（10条绿色＋10条黄色）) single layer coarse sand (5 green +5 yellow)(单层粗砂款（5条绿色＋5条黄色）) single layer coarse sand (3 green +3 yellow)(单层粗砂款（3条绿色＋3条黄色）) single layer coarse sand (20 green)(单层粗砂款（20条绿色）) single layer coarse sand (10 green)(单层粗砂款（10条绿色）) single layer coarse sand (5 green)(单层粗砂款（5条绿色）) single layer coarse sand (3 green)(单层粗砂款（3条绿色）) single layer coarse sand (20 yellow)(单层粗砂款（20条黄色）) single layer coarse sand (10 yellow)(单层粗砂款（10条黄色）) single layer coarse sand (5 yellow)(单层粗砂款（5条黄色）) single layer coarse sand (3 yellow)(单层粗砂款（3条黄色）) single layer coarse sand (1 yellow)(单层粗砂款（1条黄色）)