diff --git a/src/services/print-service.js b/src/services/print-service.js
new file mode 100644
index 0000000..78ced30
--- /dev/null
+++ b/src/services/print-service.js
@@ -0,0 +1,28 @@
+const net = require('net');
+
+function printZpl(zplData, printerIp, printerPort = 9100) {
+  return new Promise((resolve, reject) => {
+    const client = new net.Socket();
+
+    client.connect(printerPort, printerIp, () => {
+      client.write(zplData, () => {
+        client.end();
+      });
+    });
+
+    client.on('close', () => {
+      resolve({ success: true });
+    });
+
+    client.on('error', (err) => {
+      reject(new Error(`Print error: ${err.message}`));
+    });
+
+    client.setTimeout(10000, () => {
+      client.destroy();
+      reject(new Error('Print timeout: could not connect to printer'));
+    });
+  });
+}
+
+module.exports = { printZpl };
diff --git a/src/services/zpl-generator.js b/src/services/zpl-generator.js
new file mode 100644
index 0000000..fa579b4
--- /dev/null
+++ b/src/services/zpl-generator.js
@@ -0,0 +1,19 @@
+function generateLabel(article, quantity = 1) {
+  const desc = (article.descripcion || '').substring(0, 40);
+  const intercambio = article.intercambio || 'S/N';
+  const code = article.noIdentificacion || '';
+
+  const singleLabel = [
+    '^XA',
+    `^FO30,20^A0N,28,28^FD${desc}^FS`,
+    `^FO30,60^A0N,22,22^FDInt: ${intercambio}^FS`,
+    `^FO30,95^BY2^BCN,50,Y,N,N^FD${code}^FS`,
+    '^XZ',
+  ].join('\n');
+
+  if (quantity <= 1) return singleLabel;
+
+  return Array(quantity).fill(singleLabel).join('\n');
+}
+
+module.exports = { generateLabel };
diff --git a/tests/zpl-generator.test.js b/tests/zpl-generator.test.js
new file mode 100644
index 0000000..63b4ed1
--- /dev/null
+++ b/tests/zpl-generator.test.js
@@ -0,0 +1,52 @@
+import { describe, it, expect } from 'vitest';
+import { generateLabel } from '../src/services/zpl-generator.js';
+
+describe('ZPL Generator', () => {
+  it('should generate valid ZPL with name, intercambio, and barcode', () => {
+    const zpl = generateLabel({
+      descripcion: 'Balata ceramica delantera',
+      intercambio: 'INT-9999',
+      noIdentificacion: 'BK-001',
+    });
+
+    expect(zpl).toContain('^XA');
+    expect(zpl).toContain('^XZ');
+    expect(zpl).toContain('Balata ceramica delantera');
+    expect(zpl).toContain('INT-9999');
+    expect(zpl).toContain('BK-001');
+  });
+
+  it('should handle missing intercambio', () => {
+    const zpl = generateLabel({
+      descripcion: 'Filtro de aceite',
+      intercambio: null,
+      noIdentificacion: 'FT-200',
+    });
+
+    expect(zpl).toContain('Filtro de aceite');
+    expect(zpl).toContain('S/N');
+    expect(zpl).toContain('FT-200');
+  });
+
+  it('should truncate long descriptions', () => {
+    const zpl = generateLabel({
+      descripcion: 'Este es un nombre de articulo extremadamente largo que no cabe en la etiqueta',
+      intercambio: 'X-1',
+      noIdentificacion: 'LONG-001',
+    });
+
+    expect(zpl).toContain('^XA');
+    expect(zpl).toContain('^XZ');
+  });
+
+  it('should generate multiple labels for quantity > 1', () => {
+    const zpl = generateLabel({
+      descripcion: 'Balata',
+      intercambio: 'INT-1',
+      noIdentificacion: 'BK-001',
+    }, 3);
+
+    const labelCount = (zpl.match(/\^XA/g) || []).length;
+    expect(labelCount).toBe(3);
+  });
+});