Custom Plastic Injection Mould with Polishing for Precision Plastic Mold Manufacturing

Our custom injection molding service combines plastic polishing and precision shaping to produce high-quality molded parts. Every injection mould is engineered to deliver accurate dimensions, smooth polished surfaces, and consistent performance. From design to production, we help you benefit from reliable quality, cost efficiency, and fast turnaround. Ideal for a wide range of plastic products, our molds ensure excellent detail and long service life. Contact us for professional solutions.

Beijing Longshan Brothers Trading Co., Ltd. is located in Beijing, the capital of China. The company comprises a mould company specializing in injection mould manufacturing, an aluminum die casting company focused on die-casting mould manufacturing, a machinery company engaged in machine developing and manufacturing, and an OEM assembling company.

Founded in 1992, the company covers an area of 15,000 square meters with more than 100 employees. ASSAB, LKM, YUDO, and other well-known domestic and foreign enterprises are extended suppliers of raw materials. Our products have long served China, Germany, Italy, Russia, and other overseas countries.

The company has passed the ISO 9000 quality system certification. We have mass-produced plastic parts, stamping parts, and aluminium die castings parts with mould as tools. These are mainly used in electrical equipment, electric power, photo voltaic, aerospace, railway locomotives, household appliances, cars, construction materials, medical, and other industries.

We have rich experience in meeting customer quality requirements and a perfect service system covering before-sale, during-sale, and after-sale support. We are devoted to creating an Ever-stand Brand and building a century enterprise. Looking forward to the future, the company will uphold the business philosophy of professional quality, integrity, and development, creating higher and more precise products. Making friends with the whole world and achieving a better future hand in hand.

We provide customized mold services, including injection molds, die-casting molds, and rubber molds. At the same time, we also mass-produce mold products such as plastic products, die-casting products, and rubber products. You can send us your samples or drawings, and we will design the mold. After multiple rounds of communication and confirmation, we will process and make the mold. During the production process, we will provide progress photos and videos. After the mold is made, we will carry out mass production of mold products.

Our products are sold all over the world — Asia, Europe, Africa, and America. We have long-term cooperation and friendly relationships with foreign customers.