马年行大运
Wish you good luck in the year of horse.

祝您龙马精神
Wish you full of vigor/keep a vigorous spirit in the new year.

祝您来年马到成功
Wish you a speedy success in the new year.

祝您公司人强马壮
Wish your company boast well-equipped and well-trained staff with high morale.

事业如万马奔腾
Wish you have a career that thrives like ten thousand horses galloping.

愿青梅竹马，一生相依
Wish all the childhood sweethearts live happily together for the rest of their lives.

祝事业一马平川
Wish you have a smooth career path.