Jack Ma's 15 'expensive' sales principles for business people
on the road to becoming the richest billionaire in asia, jack ma has drawn for him many valuable experiences, becoming famous words worth considering for many people to ponder.Seven of Jack Ma's failures and 7 extremely valuable lessons
jack ma - the owner of china's leading e-commerce group this year is 51 years old and owns a fortune of up to 23.3 billion usd, each implementing ipo (initial public offering).