https://www.japanrubberweekly.com/2026/02/interview-sumitomo-riko-president-kazushi-shimizu/
Interview: Sumitomo Riko President Kazushi Shimizu - Japan Rubber Weekly
Japan Rubber Weekly recently sat down with Sumitomo Riko President Kazushi Shimizu to discuss latest developments. Shimizu said the company...
japan rubber weeklysumitomo rikointerviewpresidentkazushi
https://www.japanrubberweekly.com/2026/04/sumitomo-riko-substantially-expands-solar-power-capacity-cutting-carbon-emissions/
Sumitomo Riko Substantially Expands Solar Power Capacity, Cutting Carbon Emissions - Japan Rubber...
Sumitomo Riko has added approximately 3,600 kW of solar‑derived electricity across the group in fiscal 2025, expanding its total solar...
sumitomo rikosolar powercutting carbonexpands