feat(content): 多语言配置

- 新增碳钢酸洗机组文档，包含详细功能说明
- 新增高效电工钢连续处理机组文档，涵盖产品及工艺信息
- 新增锌铝镁镀层机组文档，补充详细说明
- 新增彩涂机组文档，录入规格参数及节能特性
- 新增不锈钢连续退火酸洗机组文档，撰写设备说明及核心特点
- 新增热镀锌 / 镀铝锌机组文档，完善详细信息及技术参数

content/lines/en/carbon-steel.mdx

@@ -0,0 +1,17 @@
+---
+title: Carbon Steel Pickling Line
+slug: carbon-steel
+desc: The primary function of a pickling line is to remove oxide scales and contaminants from the surface of hot-rolled steel coils through mechanical and chemical processes, yielding steel strips with clean surfaces. Pickling lines can be categorized into continuous annealing and pickling lines as well as push-pull pickling lines. Our company (SAGA Corporation) has constructed numerous pickling lines both domestically and overseas.
+cover: /images/carbon-steel-pickling-cover.png
+images:
+  - /images/carbon-steel-pickling-1.png
+  - /images/carbon-steel-pickling-2.png
+properties: 
+  - The push-pull pickling process adopts an advanced shallow-tank turbulent pickling technology, featuring short pickling time and high pickling efficiency.
+  - The push-pull pickling line is divided into 6 sections, each equipped with an independent external heating system and acid circulation system. Optimal pickling results can be achieved by adjusting the temperature of each pickling section.
+  - The continuous pickling process employs a highly efficient turbulent shallow-tank pickling technology, with the liquid level in the acid tank being only 150mm. The acid tank cover is designed with an inner cover and an outer cover, which can not only reduce acid volatilization but also improve the turbulence intensity of the acid solution.
+  - The continuous pickling line is equipped with three pickling tanks, each fitted with a separate external heating system and acid circulation system. By regulating the temperature, concentration and turbulence intensity of each tank, optimal pickling effects can be obtained.
+  - A five-stage counter-current cascade rinsing system is adopted, which requires only a small amount of rinsing water. The surface cleaning quality of steel strips is guaranteed by precisely controlling the conductivity of the final rinsing section.
+  - The continuous pickling line is configured with a temper mill with a rolling force of 800 tons, which can effectively improve the surface quality of products, rectify strip shape defects, partially eliminate the yield plateau, and significantly enhance the market competitiveness of products.
+  - The continuous pickling line uses a reliable and stable double-head rotary tower type disc shear, where parameters such as shear blade opening, overlap and side clearance can be adjusted automatically.
+---

content/lines/en/electric-steel.mdx

@@ -0,0 +1,20 @@
+---
+title: High-efficiency Electrical Steel (Silicon Steel) Continuous Processing Line
+slug: electric-steel
+desc: It is designed for the production of various grades of non-oriented cold-rolled silicon steel, as well as conventional grain-oriented silicon steel (CGO) and high magnetic induction grain-oriented silicon steel (HiB), providing raw materials for manufacturing all types of motors and transformers. To date, nearly 20 continuous annealing lines for cold-rolled non-oriented silicon steel have been constructed, along with 2 projects (5 lines in total) of continuous processing lines for cold-rolled grain-oriented silicon steel.
+cover: /images/electrician-steel-cover.png
+images:
+  - /images/electrician-steel-1.png
+  - /images/electrician-steel-2.png
+properties: 
+  - Line Types: Normalizing and pickling line, decarburization annealing and insulation coating line, decarburization annealing, nitriding and magnesium oxide coating line, insulation coating and skin-pass rolling line
+  - Product Grades: Non-oriented (high, medium and low grades), grain-oriented (CGO, HiB)
+  - Coating Types: Insulation coating, magnesium oxide coating
+  - Normalizing Annealing Equipment - Cooling Methods: Air duct cooling, steam mist cooling, air jet cooling, water spray cooling
+  - Normalizing Annealing Equipment - Energy-saving Measures: High-efficiency radiant tube combustion air heat exchanger, flue gas combustion air heat exchanger, flue gas hot air and hot water heat exchanger, flue gas thermal radiation preheating of steel strip before non-oxidizing heating, lightweight fiber furnace lining
+  - Continuous Annealing Furnace - Decarburization Method: Decarburization with humidified nitrogen-hydrogen mixed gas
+  - Continuous Annealing Furnace - Nitriding Method: Low-temperature nitriding
+  - Continuous Annealing Furnace - Energy-saving Measures: High-efficiency radiant tube combustion air heat exchanger, flue gas combustion air heat exchanger, flue gas hot air and hot water heat exchanger, flue gas thermal radiation preheating of steel strip before non-oxidizing heating, lightweight fiber furnace lining
+  - Coating Machine: Two-roll type (special grooved rubber-covered roll)
+  - Magnesium Oxide Removal Cleaning Equipment Method: Combined chemical cleaning and hot water cleaning
+---

content/lines/en/magnesium.mdx

@@ -0,0 +1,9 @@
+---
+title: Zinc-Aluminum-Magnesium Coating Line
+slug: magnesium
+desc: Zinc-aluminum-magnesium coated steel sheets are manufactured via the continuous hot-dip galvanizing process. At least three alloying elements including zinc, aluminum and magnesium are added to the galvanizing bath, ultimately producing coated steel sheet products with a special coating structure. Zinc-aluminum-magnesium coating products boast excellent corrosion resistance and other comprehensive properties, serving as a new type of coating material to replace traditional pure zinc coatings. Tests and practical applications have shown that under the same conditions, the corrosion resistance of zinc-aluminum-magnesium coatings can be 10 to 20 times that of traditional pure zinc coatings.
+cover: /images/zinc-cover.png
+images:
+  - /images/zinc-1.png
+  - /images/zinc-2.png
+---

content/lines/en/paint.mdx

@@ -0,0 +1,17 @@
+---
+title: Color Coating Line
+slug: paint
+desc: Color-coated sheets are paint-coated products based on substrates such as cold-rolled steel sheets, galvanized steel sheets and aluminum alloy sheets. Featuring corrosion resistance, decorative properties and other functions, they can directly provide raw materials for industries including construction, automobile manufacturing and home appliance manufacturing. Our company has constructed nearly 20 color coating lines at home and abroad successively.
+cover: /images/color-coating-cover.png
+images:
+  - /images/color-coating-1.png
+  - /images/color-coating-2.png
+properties: 
+  - Line Types: Two-coat two-bake, three-coat three-bake
+  - Product Grades: Building material sheets, decorative sheets, home appliance sheets
+  - Coating Types: Epoxy resin, polyurethane, polyester, polypropylene, polyvinylidene fluoride (PVDF), silicone-modified polyester
+  - Total Dry Film Thickness: min: 23μm, max: 70μm
+  - Other Treatments: Embossing, printing, hot laminating, cold laminating
+  - Coating Machines: Double-coating head two-roll type (for primer coating), three-roll type (for top coating of the front side), two-roll type (for top coating of the back side)
+  - Energy-saving Measures: Hot air recycling and lightweight fiber furnace lining; Waste gas, air and water heat exchangers are installed in the flue after TIC for heating the unit's baking oven and cleaning solution; Alternatively, the baking oven is directly heated by the hot flue gas after incineration (RTO); A hot water heat exchanger is installed in the flue after CIU for heating the cleaning solution
+---

content/lines/en/stainless-steel-heat-treatment.mdx

@@ -0,0 +1,14 @@
+---
+title: Stainless Steel Continuous Annealing Pickling Line
+slug: stainless-steel-heat-treatment
+desc: The stainless steel continuous annealing pickling line is used for annealing and pickling various types of stainless steel to achieve the required mechanical properties and surface quality. It is mainly divided into hot-rolled stainless steel annealing pickling lines, cold-rolled stainless steel annealing pickling lines and cold-rolled stainless steel bright annealing lines. Our company has successively constructed ten such lines both domestically and overseas. The main features of the line are as follows:
+cover: /images/stainless-steel-annealing-pickling-cover.png
+images:
+  - /images/stainless-steel-annealing-pickling-1.png
+  - /images/stainless-steel-annealing-pickling-2.png
+properties: 
+  - Welding Machine: Adopts a complete welding process of shearing → butt jointing → welding → punching → edge trimming. Both the inlet and outlet are equipped with automatic steel strip centering devices. The clamping devices feature uniform force application and adjustable pressure, with longitudinal and transverse movement functions, as well as the function of steel strip lap angle compensation.
+  - High-pressure Hot Water Scrubbing and Rinsing: The water temperature is approximately 80℃, equipped with a hot water circulation system for rinsing. After degreasing treatment, it can ensure the surface cleanliness of the steel strip and meet the requirements of subsequent processes.
+  - Annealing Furnace Preheating Zone: Makes full use of the exhaust gas from the heating furnace to preheat the steel strip, effectively improving the thermal efficiency of the furnace and achieving energy conservation and consumption reduction.
+  - Pickling Process: Adopts a combined process of neutral salt electrolytic pickling + mixed acid pickling to stably guarantee pickling quality and ensure that the product surface meets the standards.
+---

content/lines/en/zinc.mdx

@@ -0,0 +1,21 @@
+---
+title: Hot-dip Galvanizing / Galvalume Coating Line
+slug: zinc
+desc: Hot-dip galvanizing/galvalume coating refers to covering a layer of zinc or zinc-aluminum alloy on the surface of steel strip via the hot-dip coating method. It features strong cathodic protection performance, enabling it to be widely used in various fields such as industry, agriculture and construction, and has become one of the most extensively applied coating products nowadays.
+cover: /images/zinc-cover.png
+images:
+  - /images/zinc-1.png
+  - /images/zinc-2.png
+properties: 
+  - Line Types: Horizontal type, vertical type, combined horizontal-vertical type
+  - Processing Specification/Thickness: Cold-rolled strip / min 0.12mm, max 2.5mm; Hot-rolled strip / min 1.5mm, max 5mm
+  - Processing Specification/Width: min 550mm, max 1500mm
+  - Line Process Section Speed: max 200m/min (240m/min for GL)
+  - Continuous Annealing Furnace/Furnace Type: Horizontal type, vertical type, combined horizontal-vertical type (L-type)
+  - Continuous Annealing Furnace/Heating Method: Gas-fired non-oxidizing heating (NOF), gas-fired radiant tube heating (RTF), electric radiant tube and resistance strip heating
+  - Continuous Annealing Furnace/Cooling Method: Protective gas conventional jet cooling, high-hydrogen high-speed jet cooling
+  - Zinc Pot: Jet-flow ceramic induction zinc pot (GL with pre-melting pot)
+  - Air Knife: Advanced single-nozzle air knife, multi-chamber air knife
+  - Temper Mill: 300T-800T, roll wet tempering
+  - Energy-saving Measures: High-efficiency radiant tube combustion air heat exchanger, flue gas combustion air heat exchanger, flue gas hot air and hot water heat exchanger, thermal protective gas circulating injection for steel strip preheating, flue gas thermal radiation preheating of steel strip before non-oxidizing heating, lightweight fiber furnace lining
+---

content/workshop/en/assembly.mdx

@@ -0,0 +1,9 @@
+---
+title: Assembly Workshop
+desc: An assembly workshop is a specialized facility responsible for the quality inspection, assembly, pre-installation and commissioning of equipment components. It plays an important role in the production process.
+cover: machine.jpg
+slug: assembly
+images:
+  - machine.jpg
+  - machine2.jpg
+---

content/workshop/en/heat-treatment.mdx

@@ -0,0 +1,9 @@
+---
+title: Heat Treatment Workshop
+desc: A heat treatment workshop is a specialized facility dedicated to the heat treatment of metal materials. Its main processes include quenching, tempering, normalizing, isothermal quenching, annealing and hardening.
+cover: machine.jpg
+slug: heat-treatment
+images:
+  - machine.jpg
+  - machine2.jpg
+---

content/workshop/en/machine.mdx

@@ -0,0 +1,9 @@
+---
+title: Machining Workshop
+desc: The machining workshop of this machinery factory covers an area of 4,000 square meters and is equipped with dozens of processing equipment, including milling machines, lathes, grinding machines, drilling machines and so on.
+cover: machine.jpg
+slug: machine
+images:
+  - machine.jpg
+  - machine2.jpg
+---