①The texts and parentheses in this column are all descriptive information. ②The \” in the dimension values are the multiplication sign. Example:

1) Cold-rolled plate, premium cold-rolled carbon steel 08 material compliant with China national standard, with a thickness of 2.0 mm. The notation is: Fe, 08, T2.0 2) Injection molded plastic part conforming to the requirements of NEBS, PC

material, with a flame retardant grade of 5VA and color of “RAL7035”. The notation is: Pla, PC/NEBS-YB206-5VA

? Marked Format of Non-standard Materials

Because some nonmetallic materials, such as packing materials and glass materials, do not have state-designated unified marks or international universal codes, they cannot be notated using the method defined in section 4.1 . In such cases, just indicate the material name and specifications in the material column of the drawings. The

specifications are notated in the same way as described in section 4.1 . If more than 25 characters are needed to note a material exceeds 25 characters, describe the materials in the “Notes” on the design drawing, and fill the material column with “See Note …”.

Example:

Tempered glass plate, in brown color, with a thickness of 5 mm. Fill the material column with “SEE NOTE 1”.

The “Notes” section in the drawing should be as follows: NOTES：

1. MATERIAL: BROWN SAFETY GLASS, T5.0 2. ......

? Special Marked_Drawing No.

Some pats are machining on the semi-product,which in the material bar is the drawing number of the semi-product(DKBA XXXXX). Such parts include die-cast parts and section parts.

For example, a part made of a die-cast (or section) workblank its drawing number is DKBA DKBA8.111.1111 should be notated as follows:

DKBA8.111.1111

? Description of Surface Treatment

The surface treatment is sepressed by surface treatment code, The surface

treatment code is expressed the surface treatment methods and the quality requirement.

? Encoding Rules Of Treatment Codes

A surface treatment consists of a letter and three digits. The letter is specified by the first Chinese letter of the substrate material. This rule is not applied to the \

codes. The three digits indicate the sequential number.

If there is more than one surface treatment in one part, only the main treatment code filled in the title bar, and others marked in the notes of the drawings.

If a surface treatmaent code with a suffix,such as”_1” or”_3”…,which means the surface treatmean quality requirements is different with the code without the suffix,and the precess is the same.The detailed requirements refer to the specification of the process.

? Meanings Indicated by Surface Treatment Codes

Table 3 lists the process names, process definitions, quality standard document numbers, and OBSERVATIONAL STANDARD numbers. These quality standard documents and OBSERVATIONAL STANDARD s must be followed.

The processing methods of the surface treatment in the drawings, which should corresponding to the process and quality instruction in table 3.The “YB***” in the table is the OBSERVATIONAL STANDARD for appearance in Huawei. For details about OBSERVATIONAL STANDARD, see DKBA 0.400.0001.

The combination of codes on the drawing indicates that the surface treatments are performed one by one according to the sequence of the codes. This happens only in the following two cases:

1）Zinc electroplating followed by local powder coating (painting): The combination is \example, G002+G108,G016+G150). The combination indicates zinc electroplating followed by powder coating. Note that phosphating involved in the powder coating process can be omitted.

2）Aluminum anodizing followed by local powder coating (painting): The

combination is \(for example, L001+L108). The combination indicates anodizing followed by powder coating. Note that chemical conversion involved in the powder coating process can be omitted.

3） Hot dipping zinc followed by local out-door type powder coating (painting): The combination is \steel substrate\followed by out-door type powder coating. Note that phosphating involved in the powder coating process can be omitted.

?

Surface treatment codes and the requirement

Substrate Not specified Nonmetallic Code A000 F004 F006 F007 Process No surface treatment Plating chromium bright Painting (NS Silver Gray) Painting(IT Black) Quality Requirements None DKBA0.450.0066 DKBA0.450.0065 and YB046 DKBA0.450.0065 and YB085 F226 G001 G002 G003 G004 G005 G006 G007 G008 G009 G011 G012 G014 G015 G016 G017 G018 G101 G102 G103 G104 Steel G105 G106 G107 G108 Painting (EN Silver) Phosphating followed by Painting black Zinc electroplating with yellow conversion coating Same as G002 Zinc electroplating with black conversion coating Same as G006 Electroplating nickel, bright Electroplating pure-tin Electroplating chromium, bright Sandblasting followed by Electroplating chromium, matt Passivation of Stainless Steel Hot dipping zinc Electroplating high-temperature tin Zn-Al Flake Coating Zinc electroplating with blue conversion coating Electroplating hard chrome Electroplating Zinc-Nickel Alloy Same as G107 Phosphating followed by Powder coating (HUAWEI WHITE / SAND) Same as G108 Phosphating followed by powder coating (HUAWEI BLACK / SAND) Phosphating followed by powder coating (HUAWEI BLUE / SAND) Same as G107 Phosphating followed by powder coating (HUAWEI GREY / SAND) Phosphating (or passivation for stainless steel) followed by outdoor type powder coating (RAL7035 / KINKLE,) Passivation (or passivation for stainless steel) followed by outdoor type powder coating (HUAWEI LIGHT GREY 3010 / KINKLE) Same as G125 DKBA0.450.0065 and YB078 DKBA0.450.0067＋DKBA0.450.0065 DKBA0.450.0066 Same as G002 DKBA0.450.0066 Same as G006 DKBA0.450.0066 DKBA0.450.0066 DKBA0.450.0066 DKBA0.450.0015 and YB010+DKBA0.450.0066 and YB025 DKBA0.450.0067 DKBA0.450.0066 DKBA0.450.0066 DKBA0.450.0065 DKBA0.450.0066 DKBA0.450.0066 DKBA0.450.0066 Same as G107 DKBA0.450.0067+ DKBA0.450.0065 and YB005 Same as G108 DKBA0.450.0067＋DKBA0.450.0065 and YB007 DKBA0.450.0067＋ DKBA0.450.0065 and YB008 Same as G107 DKBA0.450.0067＋ DKBA0.450.0065 and YB006 DKBA0.450.0067 ＋ DKBA0.450.0065 and YB026 DKBA0.450.0067 ＋ DKBA0.450.0065 and YB056 Same as G125 DKBA0.450.0067＋ DKBA0.450.0065 and YB030 DKBA0.450.0067＋ DKBA0.450.0065 and YB032 DKBA0.450.0067＋ DKBA0.450.0065 and YB033 DKBA0.450.0067＋ DKBA0.450.0065 and YB034 DKBA0.450.0067＋ DKBA0.450.0065 and YB036 DKBA0.450.0066＋ DKBA0.450.0065 and YB056 G109 G121 G122 G123 G124 G125 G127 G128 Phosphating followed by Powder coating (HUAWEI LIGHT GREY 3010 / SAND,) Phosphating followed by outdoor type Powder coating (DARK GREY M6010) Phosphating followed by outdoor type Powder coating (LIGHT GREY M4010) Phosphating followed by Powder coating (NB7547) Phosphating followed by Powder coating (NB WHITE) Hot dipping zinc followed by outdoor type Powder coating (HUAWEI G129 G130 G132 G133 G134 G135 G136 G137 G138 G139 G140 G141 G142 G143 G144 G145 G146 G147 G148 G149 G150 G151 G152 G153 LIGHT GREY 3010 / KINKLE) Phosphating (or passivation for Stainless Steel)followed by Powder coating (NC PURPLISH GREY) Phosphating followed by Primer and Top Painting (NC METALLIC GREY) Same as G133 Hot dipping zinc followed by outdoor type Powder coating(RAL7035 / KINKLE) Same as G136 Same as G107 DKBA0.450.0067＋ DKBA0.450.0065 and YB038 DKBA0.450.0067＋ DKBA0.450.0065 and YB039 Same as G133 DKBA0.450.0066＋ DKBA0.450.0065 and YB026 G154 G155 Same as G136 Same as G107 DKBA0.450.0066+ Equivalent to G002 followed by G108 DKBA0.450.0065 and YB026 DKBA0.450.0067＋ Phosphating followed by Powder coating (PANTONE 413C) DKBA0.450.0065 and YB052 DKBA0.450.0067＋ Phosphating followed by Powder coating (PANTONE CoolGray 8C) DKBA0.450.0065 and YB053 Phosphating followed by PZ powder DKBA0.450.0067＋ primer and outdoor type Powder DKBA0.450.0065 and YB026 coating (RAL7035 / KINKLE,) Painting rich-zinc DKBA0.450.0065 DKBA0.450.0067＋ Phosphating followed by Powder coating (RAL7035 / SAND) DKBA0.450.0065 and YB054 DKBA0.450.0067＋ Phosphating followed by Powder coating (RAL7037/ SAND) DKBA0.450.0065 and YB055 DKBA0.450.0067＋ Phosphating followed by outdoor type Powder coating (NCS2010) DKBA0.450.0065 and YB057 DKBA0.450.0067＋ Phosphating followed by Powder coating (BD-30488) DKBA0.450.0065 and YB058 Passivation (or Passivation of DKBA0.450.0067＋ stainless steel) followed by outdoor DKBA0.450.0065 and YB059 type powder coating (BT-223) Phosphating followed by Powder DKBA0.450.0067＋ coating (BLACK / SAND) DKBA0.450.0065 and YB061 Phosphating (or Passivation of DKBA0.450.0067＋ stainless steel) followed by outdoor DKBA0.450.0065 and YB063 type powder coating (RAL7035 ) Phosphating followed by PZ powder DKBA0.450.0067＋ primer and outdoor type Powder DKBA0.450.0065 and YB063 coating (RAL7035) Hot dipping zinc followed by outdoor DKBA0.450.0066＋ type Powder coating(RAL7035) DKBA0.450.0065 and YB063 DKBA0.450.0067 Phosphating followed by Powder ＋ coating (EN BLACK / SAND) DKBA0.450.0065 and YB066 Phosphating followed by Powder DKBA0.450.0067＋ coating (PURPLISH GREY / FLAT) DKBA0.450.0065 and YB065 Phosphating followed by Powder DKBA0.450.0067＋ coating（BLACK） DKBA0.450.0065 and YB062 Phosphating (or Passivation of DKBA0.450.0067＋ stainless steel) followed by outdoor type powder coating (RAL6009 DKBA0.450.0065 and YB067 Green ) Phosphating (or passivation for DKBA0.450.0067 ＋ stainless steel) followed by powder DKBA0.450.0065 and YB026 coating (VDF WHITE / SAND) Hot dip coating(dipping plastic DKBA 0.400.0177 and YB060 powder，EN RED)