中文版

New foreign trade

The electrical suit consists of 13 components, each using a safety socket, a...
The product is composed of 10 30ML reagent bottle, 12 plastic bottle, a slice of...
The product consists of a 60MM plastic funnel, an asbestos net, a goggles, a 6...
The product is composed of 4 60ML reagent bottle and 1 30ML reagent bottle, 3 25...
bracket base, a diameter of 10MM metal rod, a clip hoop bracket, a plastic...
The product is composed of 2 conical flask, respectively 100ML and 250ML wide...
The product is composed of a laser box, a semicircle, a trapezoid, a triangle, a...
Plug type combination package, equipped with a plastic base plate for inserting ...
Instrument transformer coil, bridge, loudspeaker, magnet, compass etc.
The material is steel, wood, aluminum, plastic, and hook, cube size 3*3*3CM
Demonstrate the use of solids in thermal expansion and cold contraction.