标四成立于1960年，专业紧固件制造商。涉及的产品类型有：螺钉，螺母，铆钉，垫圈等，产品规格从M2-M14,性能等级从4.8级-10.9级。
标四的紧固件产品主要应用于汽车行业，主打产品为自攻螺钉和螺钉，主要用于汽车仪表板，门板，座椅，保险杠，天窗等。其结合高品质的紧固件技术和优质多样的服务，从产品的发展，生产到供应，为中国和全球市场提供高品质的紧固件产品。
公司讲求团队合作精神，欢迎具有开放思维的, 较强适应能力的, 负有责任感的，乐于挑战自我的各路人才。
Shanghai biaosi was established in 1960, professional fastener manufacturers. Types of products involved are: screws, nuts, rivets, washers, etc., product specifications from the M2-M14, the performance rating from 4.8 grade -10.9.
Shanghai biaosi fastening pieces of products are mainly used in the automotive industry, flagship product for self tapping screws and screw, mainly for automotive instrument panels, door panels, seat, bumper, scuttle. Its combination of high quality fastener technology and quality and variety of services, from product development, production to supply, for the Chinese and global markets to provide high quality fasteners products.
Company emphasizes teamwork spirit, welcome to have open thinking, strong adaptive ability, have a sense of responsibility, willing to challenge all kinds of talents.
