Thetwomainprintmediais:()
Wehavebeenimportingandexportingallkindsofmetalsandmineralsfor30yearsandhavemanycustomersandfriendsinover80countriesandregions.
Inthepast,peopleusedtotravelabroadtolookmanydifferences.Nowadays,placesallovertheworldaremoreandmoresimilar.Whatarethecausesofthesimilarity?Doyouthinktheadvantagesofthisproblemoutweighthedisadvantages?