| 3. | The fair is jointly sponsored by 25 trade delegations specialized i metals and minerals , chemicals , machinery and equipment , metallurgy , scientific instruments , textiles , light industrial products , cereals , oils and foodstuffs , native produce and animal by - products and arts and crafts 本届交易会由25家贸易代表团联合举办,这们专营五金矿产.化工,机械设备,冶金,科学仪器,纺织品,轻工产品,粮油食品.土特产品和工艺品 |