Changsha Friend Experimental Analysis Instrument Co., Ltd. is a professional manufacturer that develops, produces and sells oil analysis instruments. The products are suitable for petroleum, electric power, chemical, scientific research, quality inspection and colleges and other related industries. Since our inception, Friend has adhered to the "artisan spirit" of Chinese and Western industrial civilization, constantly carving our own products, constantly improving our own crafts, keeping abreast of market demands, and striving to create new management models and new products to satisfy customers.