Short answer: Email [email protected], WhatsApp +86 150 3759 9777, or use the contact form. Include model (or drawing number), quantity, applicable standard and delivery destination - our engineers verify selection and return a formal quotation.
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For batch or custom orders, also provide line conditions (speed class, tension, pollution level, altitude), schedule and certification requirements so selection checks complete in one pass. Note in your message if technical agreement or tender support documents are needed.