Synonyms: Sodium peroxodisulfate Linear Formula:Na2S2O8 CAS Number:7775-27-1 Molecular Weight:238.10

Synonyms:Potassium peroxodisulfate Linear Formula:K2S2O8 CAS Number:7727-21-1 Molecular Weight:270.32

Synonyms: AP APS Ammonium peroxodisulfate Ammonium peroxydisulfate PER Linear Formula:(NH4)2S2O8 CAS Number:7727-54-0 Molecular Weight:228.20

CAS 90-93-7 Molecular Formula C21H28N2O Molecular Weight (g/mol) 324.47 90-93-7 4,4'-Bis(diethylamino)benzophenone Michler's ethyl ketone Bis(4-(diethylamino)phenyl)methanone Bis[4-(diethylamino)phenyl]methanone 4,4'-Bis(diethylamino) benzophenone Methanone, bis[4-(diethylamino)phenyl]- 4,4-Bis(diethylamino)benzophenone 4,4'-(Tetraethyldiamino)benzophenone p,p'-Bis(diethylamino)benzophenone

Synonym(s):2-Methyl-p-phenylenediamine sulfate salt 2,5-Toluenediamine sulfate Linear Formula:CH3C6H3(NH2)2 · H2SO4 CAS Number:615-50-9 Molecular Weight:220.25 EC Number:210-431-8

C.I.45170:1 C.I.Solvent Red 49 C.I.45170:1 CAS 509-34-2 442.55 C28H30N2O3 Solvent Red BN Solvent Red BR Oil Red BN Baso Red 546 Neptun Red Base 543 Oil Pink 312 Oil Pink FB Rhodamine B Base Molecular Formula:C28H30N2O3 Molecular Weight: 442.55 CAS Registry Number:509-34-2

C.I.Solvent Violet 9 C.I.42555:1 CAS 467-63-0 391.55 C25H33N3O Oil Violet 6BN Crystal Violet Base Crystal Violet Methyl Violet 1OB Base Molecular Formula:C25H33N3O Molecular Weight: 391.55 CAS Registry Number:467-63-0

C.I.42535:1 C.I.Solvent Violet 8 C.I.42535:1 CAS 52080-58-7/67989-22-4 357.49 C24H27N3 Oil Red Violet 5BN Oil Violet 301 Oil Violet 5BN Methyl Violet Base Violet B Base Molecular Formula:C24H27N3 Molecular Weight: 357.49 CAS Registry Number:52080-58-7/67989-22-4

C.I.Solvent Blue 4 C.I.44045:1 CAS 6786-83-0 487.63 C33H33N3O Oil Blue B Oil Blue 101 Baso Blue 645 Blue B Base Victoria Blue B Base Molecular Formula:C33H33N3O Molecular Weight: 487.63 CAS Registry Number:6786-83-0

C.I.42000:1 C.I.Solvent Green 1 C.I.42000:1 CAS 41272-40-6 346.47 C23H26N2O Malachite Green Base Green 24617 Green FW Green A Molecular Formula:C23H26N2O Molecular Weight: 346.47 CAS Registry Number:41272-40-6

C.I.73065 C.I.Vat Blue 5 C.I.73065 CAS 2475-31-2 577.85 C16H6Br4N2O2 Bromo Indigo Indigo Blue 4B Bromo Indigo 2B Molecular Structure: Indigo class Molecular Formula:C16H6Br4N2O2 Molecular Weight: 577.85 CAS Registry Number:2475-31-2

C.I.73000 C.I.Vat Blue 1 C.I.73000 CAS 482-89-3 262.26 C16H10N2O2 Indigo Vat Indigo Vat Navy Blue BG Indigo Paste Molecular Formula:C16H10N2O2 Molecular Weight: 262.26 CAS Registry Number:482-89-3

Color steel coil is a product made of strip steel that is continuously subjected to surface degreasing and phosphating and other chemical transfer treatments on the production line, and then coated with organic paint and baked. It not only has the mechanical strength and easy forming performance of steel plate, but also has good decoration and corrosion resistance of organic materials.

Galvanized steel sheet is coated with a layer of metallic zinc on the surface of the steel plate to prevent corrosion and prolong its service life. This can prevent corrosion of the steel plate, provide protection, and thus increase its service life.

A pickaxe with two teeth, the pickaxe head and handle are in a cross shape, and one or both ends are pointed, usually forming a circular arc. When used, the wooden handle is inserted into the hole between the two ends. A heavy steel tool used for quarrying, paving, miners, or stonemasons.

A hoe is an ancient and widely used agricultural and horticultural hand tool used for shaping soil, removing weeds, clearing soil, and harvesting root crops. When in use, grip the handle with both hands and perform a rotary impact motion.