Q1：Is your Changcheng lubricant genuine? How can we verify it?
A：All products are sourced from the official and legitimate channels of Sinopec Great Wall Lubricants Co., Ltd. Our company holds the authorized certificate for the overall agent in Anhui Province. Each barrel of product comes with the original factory anti-counterfeiting mark and the quality inspection certificate.
Q2：How can I determine which type of lubricant should be used for my equipment?
A：You can inform us of the brand and model of the equipment, as well as its operating conditions (temperature range, rotational speed, load, etc.) or the brand and model of the original lubricating oil used. Our technical team will recommend free of charge the suitable Changcheng lubricant products for you and provide usage instructions.
Q3：Can Great Wall lubricants replace imported brands (such as Shell, Mobil, Castrol)?
A：OK. Some of the performance indicators of Changcheng Lubricant products have reached or exceeded those of imported counterparts of the same level, and the prices are more favorable. Our technical team has rich experience in import substitution. Based on the model of the imported oil products you are currently using, we can match corresponding Changcheng products for you and provide free technical support and trial schemes.
Q4：What should be done if there is a quality issue with the product after purchase?
A：Our company offers comprehensive after-sales service. After receiving the goods, please check the appearance of the products and the anti-counterfeiting marks during the inspection. If you find any quality issues with the products, please contact our after-sales team immediately. We will assist you in communicating with the manufacturer and provide solutions such as replacement or refund to protect your legitimate rights and interests.
Q5：Is there a discount for bulk purchasing?
A：Yes. Different products offer tiered discounts based on the quantity purchased. Long-term cooperative customers can apply to sign an annual framework agreement, which will grant them more favorable prices and priority delivery rights. We welcome you to contact us or visit our factory to discuss cooperation.