Surface	Coating	Thickness μm	Color	SST Hours		PCT Hours
Nickel	Ni	10～20	Bright Silver	>24～72		>24～72
	Ni+Cu+Ni
Black Nickel	Ni+Cu+Ni	10～20	Bright Black	>48～96		>48
Cr3+Zinc	Zn C-Zn	5～8	Brighe Blue Shining Color	>16～48 >36～72		---
Sn	Ni+Cu+Ni+Sn	10～25	Silver	>36～72		>48
Au	Ni+Cu+Ni+Au	10～15	Gold	>12		>48
Ag	Ni+Cu+Ni+Ag	10～ 15	Silver	>12		>48
Epoxy	Epoxy	10～20	Black/Grey	>48		---
	Ni+Cu+Epoxy	15～30		>72～108		---
	Zn+Epoxy	15～25		>72～108		---
Passivation	---	1～3	Dark Grey	Temporary Protection		---
Phosphate	---	1～3	Dark Grey	Temporary Protection)		---

Item	Parameters	Reference Value	Unit
Auxiliary Magnetic Properties	Reversible Temperature Coefficient Of Br	-0.08--0.12	%/℃
	Reversible Temperature Coefficient Of Hcj	-0.42～-0.70	%/℃
	Specific Heat	0.502	KJ·(Kg ·℃)-1
	Curie Temperature	310~380	℃
Mechanical Physical Properties	Density	7.5~7.80	g/cm3
	Vickers Hardness	650	Hv
	Electrical Resistance	1.4x10-6	μQ ·m
	Compressive Strength	1050	MPa
	Tensile Strength	80	Mpa
	Bending Strength	290	Mpa
	Thermal Conductivity	6～8.95	W/m ·K
	Young's Modulus	160	GPa
	Thermal Expansion(C⊥)	-1.5	10-6/℃-1
	Thermal Expansion(CII)	6.5	10-6/℃-1

We use no-dysprosium formula on round-low-grade products for customers to reduce costs. We have a stable formula which can be made into low temperature coefficient products. It reduces costs and increases efficiency further for customers with strictly control the tolerance in processing and the coating according to different requirements of customers to ensure the stability of plating protection at the same time, including salt spray, coating binding force, colloid affinity and so on. Round products are prone to missing corners in the production process. So we have automatic full inspection equipment for appearance tolerances, which can ensure product defects within the controllable range and avoid defective products in using process. In terms of flux consistency, we ensure fixed-point sintering furnace to the consistency of magnet process control, and magnetic flux full inspection equipment to prevent weak magnetic products from flowing to customers. In terms of magnetization packaging, our company has track automatic coding magnetization equipment to prevent personnel from mischarging the magnetic charge. In terms of delivery control, a large number of multi-line cutting machines, slicing units, mature technical processing workers, perfect product process monitoring, each step of product processing and production can get progress feedback at any time, mature cylindrical product production line, to ensure customer control requirements for product delivery, as well as controllable production progress.